Infos & Characteristics The Wing bag comes with a different entry system; It is designed to be able to protect the board while the mast is attached. It features a high protective foam and we used velcros instead of zipper so the board doesnt get damaged. Very handy when you have to assemble your foil on concrete and you need a protective mattress. Velcro Pocket This large outside pocket closing with a Velcro strap allows you to store all your boards essentials, whether its wax, fins, or screws and nuts. PRODUCTTECHNOLOGIES Polyester 600D Our bags are built in premiumPolyester 600D, this is achoc, tearing, UV and water resistant material. It guarantees the best durability to our products.