Just like a kite, the wing consists of a front tube and a middle strut made of normal Dacron and the bladder on the inside. Handle loops are sewn onto the central strut over the entire length. In between there are two deeply profiled fabric segments. After about 3 minutes of assembly time theoretically ready to go. Inflate, leash around your wrist, done.
In contrast to other wind sports, the wing is neither fixed to the board nor indirectly controlled by any cords: you have direct control and the direct feeling of the wing in your hands.