ADCO 34826 Designer Series Gray/White 34' 1" - 37' DuPont Tyvek Class A Motorhome Cover Slip-Seam strapping system cinches at the top and bottom for a perfectly snug fit and prevents cover from wind damage; Reinforcements throughout bottom and top of side panels Water resistant but breathable; Tyvek RV top panel reflects sunlight, keeping RV cooler; Designer polypropylene sides Weighted buckle toss under for easy installation underneath the coach; Lapper cap reduces wear over ladder area Durable polypropylene grey side walls, 3 year warranty, 4 travel tire guards included with every cover The most durable All Climate Class A Motorhome cover on the market; Fits 34'1"-37'