VAMO UV Board covers are made with 3/8" thick 4 way stretch Double knit UV protectant nylon/lycra. VAMO board covers keep your board up to 30 degrees cooler in the sun and keeps your board from oxidizing. That's the long way of saying, let VAMO soak up the suns harmful rays not your nice shiny new board, kayak or canoe. Works great for protecting paddleboards and kayaks on sail boats, docks, and on top of cars. The super snug fit stays on in high winds and in the fast lane! The VAMO UV cover comes with a mesh zippered nylon storage bag that measures 11" x 7" so when you are out on the water you can tuck it away for easy storage.