Deluxe Series 4mm fiber pad with 100% cotton cover. Attached storage pocket (can be tucked underneath for storage). Form fitting tailored nose and bungee cord binding for easy installation and a snug fit. NANOMAX technology: Deluxe covers are stain and scorch resistant repel water and dirt fade resistant and eco-friendly. Cut full size to fit all standard 13 to 15 x 53 to 54 tops.