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Inflatable SUP board Duotone Alfa WS Air 11'0
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ALL-AROUND / WINDSURF

Duotone iSUP Alfa WS Air 9'0'' is an inflatable SUP and windSUP board for lighter riders up to 70 kg, kids, juniors and schools. The shorter size supports easy handling, while the mastfoot insert with iBase allows a quick switch from paddling to first windsurfing sessions.

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Inflatable SUP and windsurf board for lighter riders

Duotone iSUP Alfa WS Air 9'0'' is a compact windSUP board that combines recreational paddling with the option to learn windsurfing. The 9'0'' size is designed for lighter users up to 70 kg, making it a good choice for kids, juniors, smaller adults and schools.

The board has 180 l of volume, 29'' width and 4.75'' thickness. This keeps it manageable, easy to steer and less oversized for younger riders than bigger family boards. It works well for learning SUP basics, first windsurfing manoeuvres and relaxed sessions on flatwater or small waves.

Flow-based shape with windsurfing option

Alfa WS Air is based on the Flow shape, but adds a mastfoot insert for windsurfing use. In practice, it gives you a stable all-around platform with an extra windsurfing function. The stretched outline supports good glide and directional control, while the width helps riders feel stable underfoot.

For younger riders, the key benefit is that the board does not require much strength to control. The shorter size is easier to turn, carry and position, while first windsurfing sessions become more intuitive thanks to the stable platform and simple rig attachment.

Fused Double Layer construction with welded rails

The board uses Fused Double Layer technology with welded rails. This construction is designed for durability, which is especially important during learning, school use and frequent contact with windsurfing equipment.

The board weighs 7.50 kg (+/-2%) and has a packing volume of 75 l. It remains a portable setup that is easy to transport by car and simpler to store than a hardboard.

 

SUP and windsurf setup

Alfa WS Air 9'0'' features a mastfoot insert with the iBase system, allowing quick attachment of a windsurfing rig. This means one board can be used for relaxed paddling and for first windsurfing sessions when the wind picks up.

The bottom features 3 US Boxes and 3 iSUP Race 23 fins. The centre and rear fins can be removed without tools. When windsurfing, the centre fin improves directional stability and upwind performance, while in SUP mode the fin setup can be adapted to conditions and paddling style.

Practical details for families and schools

The soft deck pad provides grip and is more forgiving during falls, which is useful for beginners and younger riders. A comfortable carry handle makes it easier to move the inflated board, while the Lashing + Shoulder Combo-Strap secures the rolled-up board and can also be used as a shoulder strap.

The board also features a Tow + Action Cam Combo-Mount for attaching a tow line or action camera.

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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Specification
Length (ft)9'0
Length (cm)274
Width (inch)29''
Width (cm)74
Thickness (inch)4.75''
Board thickness (cm)12
Volume (l)180
Max recommended riders weight (kg)70
Weight (kg)7.5
Recommended pressure (psi)15
Fin box typeUS-Box
Fin setupThruster
Windsurf baseplate mountInsert
DisciplineWindSUP
BoardbagYes
Includes leashNo
Includes paddleNo
Pump includedNo
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