Duotone Unit SLS Concept Blue - 2027

Duotone Unit SLS Concept Blue 2027 Wing

The Duotone Unit SLS Concept Blue 2027 combines the high-performance character of the 2027 Unit SLS with Duotone's distinctive Concept Blue material approach and C03 Undyed finish. It is designed for riders who want the crisp response, strong low-end drive and reduced swing weight associated with SLS construction, but specifically prefer the more understated Concept Blue version of the wing.

This is important: the Concept Blue is not a separate wave wing, freestyle wing or softer version of the Unit SLS. It occupies the same performance-focused position in the range and is intended for the same mix of freeride, freestyle, jumping and wave wing foiling. The difference is the way Duotone integrates its Concept Blue materials and undyed elements into the SLS platform.

For 2027, the Unit platform itself has also moved forward. A shorter strut reduces swing weight, profile distribution has been refined, canopy tension and tip twist have been retuned and the window arrangement has been updated. The result is a more compact-feeling Unit with efficient low-end power, precise handling through gusts and lulls and excellent stability when flagged on waves or swell.

If you already foil consistently and want a premium all-round wing, the Unit SLS Concept Blue sits in an interesting part of the range: more performance-focused than the Duotone Unit 2027, an alternative to the regular Duotone Unit SLS 2027, and below the full-Aluula Duotone Unit D/LAB 2027 in Duotone's performance hierarchy.

Quick links: Key features | Concept Blue explained | What's new | Performance | Handles & boom | Size guide | Range comparison | Board pairings | Complete your setup | Specifications | FAQs

Why choose the Duotone Unit SLS Concept Blue 2027?

• SLS-level performance: designed for riders wanting a crisp, direct and highly responsive Unit rather than the more forgiving feel of the standard construction.
• Concept Blue construction: integrates Duotone's Concept Blue material choices and visible undyed elements into the SLS platform.
• C03 Undyed finish: a distinctive technical appearance unique to the Concept Blue version.
• Shorter 2027 strut: reduces swing weight for quicker transitions, easier wing repositioning and a more compact feel.
• Strong low-end drive: useful grunt for accelerating the board and pumping onto foil.
• Direct response: the performance-focused SLS structure gives a clear connection between rider input and power delivery.
• Refined profile distribution: efficient powered performance with excellent stability when the wing is flagged.
• Optimised canopy tension and tip twist: helps keep the draft settled and the canopy clean through changing wind strengths.
• MOD3s canopy: lightweight, low-stretch canopy material designed for stable power delivery and good top-end control.
• Wide leading-edge handle: secure control when surfing, riding swell or freeflying with the rear hand released.
• Updated window arrangement: improved visibility around the wing.
• Moulded mini batten pockets: support canopy stability and durability.
• Fusion control system: compatible with the appropriate Duotone Fusion Boom or Fusion Handles.
• Broad size range: 2.0 m² through to 6.5 m².

What does Concept Blue mean on the 2027 Unit SLS?

The simplest way to understand the Unit SLS Concept Blue is that it is an alternative version of the high-performance Unit SLS platform, rather than a different wing shape developed for another discipline.

Duotone integrates its Concept Blue material approach into the SLS construction and uses visible undyed materials, producing the distinctive C03 Undyed appearance. The intention is to retain the responsiveness, control and efficiency expected from a Unit SLS while exploring a different material direction.

We would therefore choose between the regular Unit SLS and Concept Blue primarily on the complete product proposition, appearance and your preference for the Concept Blue approach – not because one is intended for freeride and the other for waves.

If your priority is simply obtaining the Unit SLS riding character, compare this wing directly with the regular Duotone Unit SLS 2027. If you specifically like the undyed Concept Blue finish and material philosophy, this is the version to choose.

What's new for the 2027 Unit SLS Concept Blue?

Shorter strut

The centre strut has been shortened for 2027, reducing the amount of structure moving around the rider as the wing changes position.

The practical benefit is reduced swing weight. Through gybes and tacks the wing feels easier to transfer from one side of the board to the other. During jumps and rotations there is less inertia to manage. When freeflying on a wave, the wing also feels less cumbersome behind you.

This change becomes particularly valuable in larger sizes, where reducing how physically large a wing feels can make a substantial difference to comfort over a complete session.

Refined profile distribution

The 2027 Unit uses less profile depth through the centre and more towards the quarter-span area of the wing.

Instead of concentrating power into one deep central section, this distributes the aerodynamic load more effectively across the span. When powered, the result is efficient drive and a more controlled draft position. When the wing is flagged, the revised profile helps it remain stable rather than constantly trying to steer itself.

This is particularly useful for riders who want one premium wing quiver for several disciplines rather than separate freeride and wave wings.

Optimised canopy tension and tip twist

Canopy tension and tip twist have both been refined to produce cleaner aerodynamics, better draft stability and a more direct response.

In variable UK conditions, this should be appreciated as predictability rather than simply extra stiffness. As gust strength changes, you want the centre of effort to remain controlled so you can concentrate on the foil instead of continuously correcting the wing.

New window layout

The updated window arrangement improves visibility around the wing, helping when checking for other water users before gybing, tacking or changing direction.

The design aims to provide useful sightlines without turning the canopy into a collection of unnecessarily large window panels.

Why SLS construction matters on the water

The biggest advantage of a performance wing construction is not simply the number on a set of scales. Structural stiffness changes how efficiently your input reaches the canopy.

A more compliant structure changes shape when heavily loaded. Some pumping or sheeting input is therefore used flexing the wing before it creates useful forward drive. A stiffer SLS structure holds its intended geometry more securely, giving the wing the crisp, connected response that experienced riders tend to notice immediately.

This becomes useful when:

• Actively pumping the wing to get onto foil
• Accelerating after a gybe or tack
• Driving hard upwind
• Loading the wing before a jump
• Making rapid steering corrections
• Using smaller, faster foils that need more board speed before take-off

MOD3s canopy

The 2027 Unit SLS platform uses Duotone's MOD3s canopy material. At approximately 69 g compared with 87 g for MOD3, it reduces canopy weight while maintaining the low-stretch behaviour needed for a performance wing.

A low-stretch canopy helps prevent the draft from moving excessively as the wing loads up. That gives more consistent power, a cleaner canopy under load and better control as apparent wind increases.

• Improved draft stability
• Smooth power delivery
• Cleaner powered canopy profile
• Strong top-end control
• Effective depower
• Reduced canopy weight
• Performance-focused durability

Strong low-end power without sacrificing control

The Unit SLS platform retains the fuller Unit leading-edge concept rather than adopting the reduced-diameter leading edge of the Unit D/LAB 2027.

That helps give the SLS versions their useful base grunt and low-end drive. Combine that with a stiffer structure and an active pump produces meaningful forward acceleration rather than simply bending the wing.

For a rider using a smaller foil or trying to make the most of marginal wind, that extra acceleration can be more useful than chasing top speed alone.

Once airborne, the refined profile, canopy tension and tip twist help keep that power controlled. The wing therefore has grunt when you ask for it without feeling unnecessarily heavy through the complete wind range.

How does the Unit SLS Concept Blue 2027 perform?

Freeride

Freeride is where the broad ability of the Unit SLS Concept Blue is easiest to appreciate. There is useful bottom-end drive for take-off, direct feedback once flying and enough top-end control to keep riding as the wind builds.

It is performance-focused without demanding that every session becomes a race. You can cruise, point upwind and cover distance, then use the same wing for jumps or waves when conditions allow.

Gybes and tacks

The shorter strut reduces the effort needed to reposition the wing through transitions. A settled draft also makes the power more predictable as the wing passes overhead or changes sides.

For progressing riders that consistency helps make transitions repeatable. For advanced riders it allows the wing to be moved faster and with less unnecessary movement.

Jumping

Before take-off, the stiffer SLS response helps the wing load cleanly. Once airborne, reduced swing weight makes it easier to keep control of the wing's position.

You do not need to be a dedicated freestyle rider to benefit from this. Even basic jumps feel cleaner when the wing responds immediately rather than continuing to flex after the rider has made an input.

Freestyle

The direct power delivery and compact geometry give the Concept Blue plenty of progression potential for freestyle. The advantage is that it remains an all-round Unit rather than becoming an uncompromising freestyle-only design.

If you want one premium wing that can move from everyday freeride into increasingly technical manoeuvres, this broad performance range is a major strength.

Wave and swell riding

The Unit SLS Concept Blue is also an excellent wave wing for riders who want more versatility than a dedicated surf design.

Release the rear hand and the refined profile is designed to remain stable while the foil is powered by the wave or swell. The shorter strut reduces swing weight and a wide leading-edge handle provides positive one-handed control.

If virtually every session revolves around wave riding and freefly, a more specialist wave wing may eventually make sense. If you want waves alongside freeride, jumping and general progression, the Unit platform remains the more versatile option.

Wide leading-edge handle and moulded mini battens

The wide leading-edge handle provides a more secure connection when the wing is flagged. This makes small adjustments easier while carving, connecting bumps or following a wave without immediately returning to the main controls.

Moulded mini batten pockets help stabilise sections of the canopy towards the trailing edge. Reducing unnecessary flutter keeps the profile cleaner when powered and the moulded pockets are designed to support durability in these loaded areas.

Fusion Handles or Fusion Boom?

The Unit SLS Concept Blue uses Duotone's modular Fusion control platform, allowing compatible sizes to be configured with either the Duotone Fusion Handle Set or Duotone Fusion Boom.

The wing is supplied without Fusion Handles or Fusion Boom. You therefore need to add the appropriate control system unless you already have a compatible set.

Choose Fusion Handles if...

• You prefer clearly defined front and rear hand positions.
• You want the most compact packed setup.
• You like being able to find your normal hand position immediately.
• You prefer separate handles rather than a continuous boom.

The Fusion Handles use lightweight Carbon construction, an oval tube profile, ergonomic pistol-grip angles and a flush connection to the strut.

Choose the Fusion Boom if...

• You want complete freedom of hand placement.
• You move your hands frequently during transitions.
• You are progressing freestyle.
• You actively pump the wing and like being able to grab anywhere.
• You come from windsurfing and prefer a conventional boom-style interface.

The Carbon Fusion Boom uses the same ergonomic pistol-grip concept but provides one continuous grip area so your hands can slide freely.

Unit SLS Concept Blue control compatibility

Wing size	Fusion Boom	Fusion Handles
2.0 m²	Small / 72 cm	Not specified for this size
2.5–3.0 m²	Medium / 84 cm	Medium
3.5–6.5 m²	Large / 96 cm	Large

Duotone Unit SLS Concept Blue 2027 size and wind range

Size	Published wind range
2.0 m²	27–45 knots
2.5 m²	23–40 knots
3.0 m²	19–37 knots
3.5 m²	16–33 knots
4.0 m²	14–30 knots
4.5 m²	12–28 knots
5.0 m²	10–25 knots
5.5 m²	9–22 knots
6.0 m²	8–20 knots
6.5 m²	7–18 knots

Manufacturer wind ranges are a starting point rather than fixed limits. Rider weight, board efficiency, foil size, pumping ability, sea state and wind quality all affect which size will work best.

How to choose your Unit SLS Concept Blue size

Do not select a wing purely from the average wind speed at your local spot. The board and foil underneath you can make an equally large difference.

A rider using a big, early-lifting front foil can normally get flying with less wing than a rider of the same weight using a small performance foil. Likewise, a narrow mid-length board will usually accelerate towards foil speed more easily than a shorter board with a broad planing surface.

As a broad guide:

• 2.0–3.0 m²: high-wind sizes, lighter riders or the smallest wing in a broad quiver.
• 3.5–4.5 m²: important powered freeride, wave and freestyle sizes.
• 5.0–5.5 m²: key everyday sizes for many UK riders, with useful overlap between lighter and more powered conditions.
• 6.0–6.5 m²: light-wind options where a responsive SLS-level construction becomes especially useful because larger wings amplify swing weight and structural movement.

The wide published overlap means many riders can build an effective two- or three-wing quiver without buying every half-metre size.

If you are unsure, tell us your weight, current board, front foil, existing wings, riding level and usual wind conditions. The SUP Company team can help choose the right individual size or work out sensible spacing for a complete quiver.

Which 2027 Duotone Unit should you buy?

Model	Best for	Why choose it?
Duotone Unit 2027	Progression and all-round riding	More forgiving construction, excellent versatility and the strongest value proposition.
Duotone Unit SLS 2027	Regular intermediate through advanced riders	Crisper SLS response and premium performance in the regular SLS colour options.
Duotone Unit SLS Concept Blue 2027	Riders wanting the SLS performance proposition with Concept Blue materials	Undyed C03 finish and Concept Blue material direction without changing the Unit SLS's broad performance purpose.
Duotone Unit D/LAB 2027	Experienced riders prioritising outright performance	Full 82 g Aluula Gold frame and reduced leading-edge diameter for minimum drag, weight and maximum response.

Unit SLS Concept Blue vs regular Unit SLS 2027

This is the most relevant comparison for most Concept Blue customers.

Both sit at the same SLS performance level and share the same freeride, freestyle and wave purpose. The Concept Blue version integrates Duotone's alternative and undyed material approach and comes in the distinctive C03 Undyed finish. The regular Unit SLS 2027 is available in the standard SLS colourways.

We would not choose between them based on an expectation that one is a fundamentally different type of wing. Choose Concept Blue because you want the Concept Blue proposition; choose regular SLS if colour choice or the conventional SLS version appeals more.

Unit SLS Concept Blue vs Unit 2027

The standard Unit 2027 is the more accessible choice. Its more forgiving inflated structure can be comfortable in gusty conditions and represents better value for riders still developing the fundamentals.

The Concept Blue becomes more worthwhile once you foil consistently enough to notice quicker response, reduced swing weight and a more performance-led structural feel.

Unit SLS Concept Blue vs Unit D/LAB 2027

The Unit D/LAB 2027 is the maximum-performance Unit. It uses a full 82 g Aluula Gold frame and a reduced leading-edge diameter to minimise drag and maximise acceleration, stiffness and speed.

Choose D/LAB if your priority is the lightest and most direct Unit available. Choose Concept Blue if you want the high-performance SLS level, useful low-end grunt and the Concept Blue material proposition without moving to the flagship D/LAB construction.

Who is the Unit SLS Concept Blue best suited to?

• Intermediate riders who already foil consistently
• Riders completing gybes and beginning to work on tacks
• Experienced freeriders wanting a premium all-round wing
• Wave riders who still want excellent powered performance
• Riders progressing into jumping and freestyle
• Existing Unit owners looking for a sharper and more direct wing
• Riders who appreciate a clean, technical undyed appearance
• Customers who specifically prefer Duotone's Concept Blue material direction
• Riders wanting SLS performance without stepping up to the full D/LAB platform

Who may be better with another Unit?

If you are still learning basic starts, regularly crashing the wing or need to maximise the value of your complete board-and-foil budget, the standard Unit 2027 may be the smarter purchase.

If you are already an experienced rider and want minimum drag, the lightest possible feel and maximum structural response regardless of price, look towards the Unit D/LAB 2027.

If Concept Blue itself is not important to you, compare this wing directly with the regular Unit SLS 2027. Its riding purpose is closely aligned and your decision may simply come down to which version you prefer to own.

Recommended 2027 board pairings

The Unit SLS Concept Blue works with virtually any suitable modern wing foil board, but matching the board to the type of riding you want to do creates a much better overall setup.

Duotone Sky Style 2027 – accessible freestyle and all-round progression

The standard Sky Style is a strong partner if you want compact handling, freeride versatility and freestyle progression without paying for an SLS board as well as an SLS wing.

Its step tail is designed to improve release onto foil, while the compact outline and wide nose and tail balance manoeuvrability with useful stability.

Duotone Sky Style SLS 2027 – performance freeride, freestyle and jumping

If you want an SLS-level setup from wing to board, the Sky Style SLS is the natural match.

Its compact outline reduces board swing weight, the step tail assists release and re-pop and its Carbon construction creates the direct board-to-foil connection that experienced riders increasingly appreciate.

This is the pairing we would look towards for jumping, freestyle and highly responsive all-round riding.

Duotone Trace SLS 2027 – advanced wave riding

The Trace SLS is the specialist wave option. Its narrower outline, pointier nose, high-apex bevelled rails and step tail are designed for reduced swing weight, tighter carving and increased clearance through aggressive turns.

Pair it with the Unit SLS Concept Blue if you want a surf-focused board but still prefer the broader powered versatility of the Unit wing.

Duotone Skybrid SLS 2027 – freeride and efficient mid-length foiling

The Skybrid SLS is arguably the broadest match for the Unit SLS Concept Blue. Its mid-length shape generates more glide before take-off, helping the board accelerate onto foil in lighter or inconsistent winds.

The combination of an efficient Skybrid and the strong low-end drive of the Unit SLS platform is particularly relevant to UK riders who want to maximise usable days rather than only riding in fully powered conditions.

Duotone Skybrid D/LAB 2027 – premium mid-length performance

The Skybrid D/LAB uses Duotone's ultra-light Hollow Shell Composite construction to reduce board swing weight while retaining the buoyancy and glide advantages of a mid-length shape.

Pairing it with the Concept Blue creates a highly responsive premium setup without requiring the D/LAB wing. Riders who value strong SLS-style wing grunt alongside an exceptionally light board may find this a particularly attractive combination.

Browse the complete Duotone Wing & Foil collection for current wings, boards, foils and compatible components.

Complete your Unit SLS Concept Blue setup

Before heading to the water, make sure you have the correct Fusion control option and an appropriate inflation pump.

• Duotone Fusion Boom – choose this if you want continuous hand placement and the ability to slide or grab anywhere during manoeuvres.
• Duotone Fusion Handle Set – the compact option with defined ergonomic Carbon handles.
• Duotone Pump – straightforward manual inflation option compatible with Duotone wings.
• Duotone Wing & Foil – browse compatible boards, foils, controls and other Duotone equipment.

Important: controls are sold separately

The Duotone Unit SLS Concept Blue 2027 does not include Fusion Handles or a Fusion Boom.

This allows you to choose your preferred control system, but it is important to budget for the correct option when buying your first Fusion-compatible Duotone wing.

If you already own Fusion controls, check the size compatibility carefully. A control setup suitable for a 4.5 m² wing, for example, is not necessarily the correct size for a 2.5 m².

Duotone Unit SLS Concept Blue 2027 specifications

Product	Duotone Unit SLS Concept Blue
Model year	2027 / SS27
Item number	42270-3535
Category	Freeride / Freestyle / Wave
Sizes	2.0 / 2.5 / 3.0 / 3.5 / 4.0 / 4.5 / 5.0 / 5.5 / 6.0 / 6.5 m²
Construction level	SLS Concept Blue
Concept	Concept Blue material approach with undyed elements
Colour	C03 Undyed
Canopy	MOD3s
Control system	Fusion Boom / Fusion Handles, size dependent
Leading-edge handle	Wide surf / freefly handle
Canopy support	Moulded mini batten pockets

Try the Duotone wing range before you buy

Construction differences are much easier to understand on the water than from a specification sheet. Selected Duotone equipment may be available through our Try It Now Demo Centre at The SUP Co x Lymington, subject to availability and rider suitability.

If you are deciding between the Unit, Unit SLS, Unit SLS Concept Blue and Unit D/LAB, trying premium constructions side by side is particularly useful. The differences are primarily about feel, response and swing weight rather than simply looking at the same published wind-range table.

Duotone Unit SLS Concept Blue 2027 FAQs

What is the Duotone Unit SLS Concept Blue 2027?

It is the Concept Blue version of Duotone's performance-focused Unit SLS platform. It combines the Unit SLS's freeride, freestyle and wave purpose with Duotone's Concept Blue material approach and distinctive C03 Undyed finish.

Is the Concept Blue a different shape from the regular Unit SLS?

Duotone positions the Concept Blue as an alternative within the Unit SLS performance level rather than as a separate discipline-specific wing. It is intended to deliver the responsiveness, control and efficiency associated with the Unit SLS while incorporating Concept Blue materials and undyed elements.

What colour is the 2027 Unit SLS Concept Blue?

The 2027 Concept Blue colour is C03 Undyed, giving the wing its distinctive understated and technical appearance.

What is the product number for the Unit SLS Concept Blue 2027?

The Duotone item number is 42270-3535. The regular Unit SLS is a separate product under item number 42270-3534.

What changed on the Unit SLS Concept Blue for 2027?

The 2027 Unit platform receives a shorter strut for reduced swing weight and a more compact feel, a revised window layout and refinements to canopy tension and tip twist. Profile distribution has also been refined to improve efficient power delivery and stability when flagged.

Is the Unit SLS Concept Blue suitable for beginners?

A progressing rider can use it, but somebody buying their first serious wing may get more practical value from the standard Unit 2027. The benefits of an SLS-level wing become increasingly worthwhile once you are foiling consistently and can appreciate lower swing weight and quicker response.

What is the difference between the Unit SLS and Unit SLS Concept Blue 2027?

They occupy the same performance-focused SLS level and are designed for the same broad freeride, freestyle and wave disciplines. The Concept Blue version integrates Duotone's Concept Blue material approach and an undyed C03 finish. Choose the regular Unit SLS if you prefer the conventional SLS proposition and colour choices; choose Concept Blue if its material direction and appearance appeal to you.

What is the difference between Unit SLS Concept Blue and Unit D/LAB?

The Unit D/LAB 2027 is the flagship construction and uses a full 82 g Aluula Gold frame together with a reduced leading-edge diameter to prioritise maximum stiffness, minimum drag and the lightest possible feel. Concept Blue sits at the SLS performance level and is the more accessible option of the two.

Is the Unit SLS Concept Blue good for wave riding?

Yes. The shorter strut, refined profile distribution and wide leading-edge handle make it highly capable when flagged. It is particularly attractive if you want good wave performance without giving up the freeride, jumping and freestyle ability of the Unit platform.

Is it good for jumping and freestyle?

Yes. The SLS-level response gives direct power when loading the wing, while the shortened strut reduces swing weight when repositioning the wing or moving through rotations.

Does the Unit SLS Concept Blue include handles or a boom?

No. Fusion controls are sold separately. Choose the appropriate Duotone Fusion Handles or Fusion Boom for your wing size unless you already own a compatible set.

What Fusion Boom size do I need?

The 2.0 m² uses the Small 72 cm Fusion Boom. Sizes 2.5 and 3.0 m² use the Medium 84 cm boom. Sizes 3.5 through 6.5 m² use the Large 96 cm Fusion Boom.

What Fusion Handles do I need?

Duotone specifies Medium Fusion Handles for 2.5 and 3.0 m² wings and Large Fusion Handles for sizes 3.5 through 6.5 m². The 2.0 m² is specified for the Small 72 cm Fusion Boom.

Should I use Fusion Handles or the Fusion Boom?

Handles make sense if you like repeatable hand positions, minimum packed size and a conventional two-handle layout. The boom is better if you want unrestricted hand placement and regularly slide your hands during pumping, transitions or freestyle manoeuvres.

What size Unit SLS Concept Blue should I buy?

Use the published wind range as a starting point, then consider your weight, board efficiency, front foil, riding ability and local conditions. Contact The SUP Company with your setup if you would like an individual size recommendation or help planning a two- or three-wing quiver.

Which 2027 Duotone board pairs well with it?

Choose the Sky Style SLS 2027 for freestyle, jumping and compact performance; the Trace SLS 2027 for advanced wave riding; or the Skybrid SLS 2027 if freeride efficiency, glide and earlier take-offs are priorities. The Skybrid D/LAB 2027 is the premium mid-length alternative.

Can I demo the Duotone Unit range before buying?

Selected Duotone wings and foil equipment may be available through our Lymington Try It Now Demo Centre. Contact us before travelling if there is a particular model or size you want to compare.

The SUP Company verdict

The Duotone Unit SLS Concept Blue 2027 makes the most sense when you already know that SLS is the level of wing you want and the Concept Blue version appeals to you specifically.

It retains the reasons we rate the Unit SLS so highly: strong low-end power, a direct performance-focused feel, reduced swing weight and the ability to cover freeride, waves and freestyle without becoming a narrow specialist wing. The shorter 2027 strut improves manoeuvrability, while the refined canopy and profile are designed to keep the wing settled both when powered and when flagged.

The Concept Blue proposition then gives you an alternative material direction and distinctive undyed appearance without changing where the wing sits from a rider's perspective.

If maximum value and forgiving handling matter most, buy the Unit 2027. If you simply want SLS performance and prefer the conventional colour options, choose the Unit SLS 2027. If you want the lightest and most technically advanced Unit available, move to the Unit D/LAB 2027.

If the Concept Blue approach appeals and you want a premium wing you can realistically use for almost every kind of wing-foil session, the Unit SLS Concept Blue is an exceptionally well-rounded choice.

Browse the complete Duotone Wing & Foil range or contact The SUP Company with your weight, current board, foil and local wind conditions for setup and sizing advice.