Cuben Fiber is a laminated fabric constructed from plasma-treated Ultra High Molecular Weight Polyethylene (UHMWPE) fiber monofilaments and polyester, PVF etc. films.
The material is used in yachting, performance sailing, windsurfing, inflatables, airship hulls, medical applications and, increasingly, ultralight backpacking.
The name Cuben Fiber was coined by the press in reference to America³ (pronounced America Cubed), the winner of the 1992 America's Cup. During the 1992 Cup, that yacht reportedly used sails made from precursors to the currently available commercial product.