Silver, 150 Denier polyester water-resistant material reflects heat away from the boat. Strong, color-fast and water-resistant for lasting outdoor durability. Seams are double folded for strength. Tie-down straps with buckles are included for securing quickly and safely. Adjustable elastic hem cords draw the cover's hem tight against any shape hull for a snug fit. Attachment hooks anchor to either the winch tower or tongue jack bracket for a secure fit.