Duotone Unit SLS Concept Blue 3.5m Wing - 2025 - New

The 2025 Duotone Unit SLS Concept Blue 3.5m brings a notably direct, responsive feel to powered wing foiling. An undyed PentaTX leading edge and strut work with an Aluula Gold centre segment to keep the frame compact and supportive under load, while the MOD3 S canopy helps deliver smooth, stable power. Brand-new stock, offered at 40% off the original UK wing RRP.

Why choose the 2025 Unit SLS Concept Blue?

• PentaTX frame and strut: the relatively stiff, low-stretch material supports a smaller-diameter inflatable structure, helping the wing resist deformation when sheeted in or driven through gusts.
• Aluula Gold centre segment: reinforcement is positioned where the leading edge carries high loads, increasing local structural support without building the entire frame from an expensive premium material.
• MOD3 S canopy: designed to maintain a stable profile and deliver smooth, predictable power, improving control across varying wind pressure.
• Light, balanced handling: the SLS construction sits between the standard Unit and the more expensive D/LAB in Duotone’s performance range, with strong power delivery and manageable drift when depowered.
• Modular Fusion controls: choose separate rigid handles for fixed, repeatable hand positions, or the continuous boom for flexible positioning during transitions.

Who is this 3.5m wing for?

The 3.5m is a compact choice for experienced riders in stronger wind or lighter riders wanting a manageable wing for freeride, wave riding and downwind conditions. Rider weight, foil area, board volume and wind strength all affect suitability: it is not the most forgiving choice for someone learning in marginal wind. For light-wind progression, look at a larger wing.

What makes the construction different?

Undyed PentaTX leading edge and strut

Duotone uses PentaTX through the main frame to create a more direct connection between your hands and the wing. The undyed material is part of the Concept Blue material approach; it is not the same thing as an entirely Aluula frame.

Aluula Gold reinforcement where it matters

The Aluula Gold centre segment reinforces a highly loaded section of the leading edge. This targeted use matters: it contributes to stiffness and response without the cost of using Aluula throughout the frame, as on some other premium wings.

MOD3 S canopy and handling

The MOD3 S canopy complements the stiffer frame by holding a more consistent shape while loaded. Combined with the wing's outline and balanced draft, it supports controllable power delivery and a light feel when flagged on a wave.

Specifications

• Model: Duotone Unit SLS Concept Blue 2025
• Size: 3.5m²
• Colour: C07 Undyed Concept Blue
• Manufacturer product family: 42250-3535
• Frame and strut: Undyed PentaTX
• Centre reinforcement: Aluula Gold
• Canopy: MOD3 S
• Control interface: Duotone Fusion, compatible with Large Fusion Handles or Large Fusion Boom
• Condition: Brand new

Choose your handles or boom

Important: the wing does not include rigid handles or a boom as standard. Choose one of the following before purchase:

• Wing only — £659.40: the wing without optional Fusion controls. Choose this only if you already own compatible controls or intend to purchase them separately.
• With Large Fusion Handles — £744.40: adds the 55cm/31cm Large Fusion Handle Set for structured hand positions and compact packing.
• With Large Fusion Boom — £744.40: adds the 960mm Large Fusion Boom for the freedom to slide your hands during transitions and powered riding.

Both control accessories are separately stocked products. Their £85 additional price is not discounted by the wing-only promotion; availability must be confirmed before this draft is published. This is a single new wing with your selected optional control component, not two different wings.

What's included?

One new Duotone Unit SLS Concept Blue 3.5m wing. The selected Fusion control option is included only when you choose and pay for the corresponding handles or boom variant. Pump, leash and any other accessories are not claimed as included; confirm the exact factory package before purchase.

Frequently asked questions

Does this wing have Aluula throughout?

No. It has an Aluula Gold centre segment alongside an undyed PentaTX frame and strut. The construction differs from an all-Aluula-frame wing.

Can I ride it without buying handles or a boom?

The control interface requires a compatible Fusion handle or boom setup for normal riding. The wing-only option is mainly useful if you already own the correct controls.

Which Fusion size fits 3.5m?

The Large Fusion Handle Set (55/31cm) or Large Fusion Boom (960mm), not the Medium versions intended for smaller wing sizes.

What is the difference between handles and boom?

The two-piece handles offer defined grip points and potentially easier packing. The continuous boom gives more freedom to reposition your hands through turns, tacks and transitions.

Related equipment

See the Duotone Fusion Boom, Fusion Handle Set and our wing and foil equipment.