Versatile SUP and windsurf board
Duotone iSUP Alfa WS Air 11'0'' is an inflatable windSUP board made for paddlers who want one setup for both SUP and windsurfing. It is a practical choice for families, schools, clubs and entry-level riders looking for a stable platform for different water activities.
The 11'0'' version has 350 l of volume, 33.5'' width and a recommended user weight of up to 100 kg. The higher volume and extra width give riders stable support underfoot, making the board well suited to adult beginners, teenagers and teaching environments.
All-around shape with windsurfing function
Alfa WS Air is based on the Flow shape - a stable all-around design with good glide and plenty of flotation. This makes the board suitable for flatwater paddling, exploring lakes and bays, and playing in small waves.
The mastfoot insert extends its use into windsurfing. When the wind picks up, you can attach a rig and use the board for learning the basics - from standing with the sail to first tacks and controlled upwind sailing. For families and schools, this is a useful two-in-one solution: SUP and windsurfing on the same inflatable board.
Durable construction for frequent use
The 11'0'' model uses Fused Double Layer technology with welded rails. This construction is designed for durability, stiffness and resistance to frequent use, including the additional demands of entry-level windsurfing.
The 6'' / 15 cm thickness supports a stable feel underfoot and helps reduce board flex under load. The board weighs 11.20 kg (+/-2%) and has a packing volume of 85 l, so despite its larger size it remains easier to store and transport than a hard windsurfing board.
Three-fin setup and fast rig attachment
Alfa WS Air 11'0'' features 3 US Boxes and 3 iSUP Race 23 fins. The centre and rear fins are removable without tools, making it easy to prepare the board for different uses.
When windsurfing, the centre fin improves directional stability and upwind performance, which is important for beginners. In SUP mode, the fin setup supports tracking and predictable handling on calm water.
Comfort for families, schools and clubs
The soft deck pad provides reliable grip and is more forgiving during falls, which is useful during learning. A comfortable carry handle makes the inflated board easier to move, while the Lashing + Shoulder Combo-Strap secures the rolled-up board and can also be used as a shoulder strap.
The Tow + Action Cam Combo-Mount allows you to attach a tow line or action camera, adding practical options for lessons, family sessions and recording progression.
Included: fins, Gearbag Roller and repair kit. Pump and leash are not included.
Features

- Flow-based shape with windsurfing insert - Stretched outline with good glide, plenty of stability and flotation for SUP paddling and your first windsurfing sessions
- Mastfoot insert - Windsurf mastfoot insert with iBase system for quick rig attachment
- Carrying handle - Soft and comfortable handle for easier carrying
- 3 x US Box / 3 x Fin iSUP Race 23 - Three US Box fin setup with three fins, allowing you to configure the board for SUP or windsurfing
- Tow + action cam combo-mount - Mounting point for towing or attaching an action camera
- Lashing + shoulder combo-strap - - Strap system for securing small gear and carrying the board more comfortably
- Round nose - Wider, rounder nose outline for stability and controlled performance on small waves
- Valve - Marine-quality valve for reliable inflation, airtightness and easy deflation
- Leash D-ring - Marine-grade stainless steel D-ring for secure leash attachment
- US Split-Box - Split US Box design reduces packed size and makes the board easier to roll and transport
- Fused Double Layer construction - Welded double-layer construction for improved stiffness, durability and lower weight
Set includes
- Gearbag Roller transport bag
- 3x Fins
- Shoulder strap
- Repair kit
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