Made from heavy duty marine grade 600 denier polyester, the Seal Skin 600 provides an excellent defense against mother nature's harsh elements. It's waterproof, durable and protects against rain, UV, snow & hail. Elastic hem around the parameter and heavy duty strap and buckle system gives a secure and snug fit. This all purpose cover is perfect for trailering, mooring or storage. Double stitched taped seams prevent leaks. Easy to install and extra roomy to allow room for accessories such as spotlights, seats and boarding ladders. We also stand by our products and provide a 1 Year warranty that covers rips and tears. SNUG FIT: Built in elastic hem around the perimeter and heavy duty strap and buckle system gives a secure and snug fit while providing enough room for accessories such as spotlights, seats and boarding ladders. HEAVY DUTY: Superior 600 denier polyester fabric. Won't shrink or stretch, and provides strong UV protection when stored outside. TRAILERABLE: Includes free set of straps and buckles and storage bag, for Mooring, Storage & Trailering. MARINE GRADE: Double stitched, taped seams with rot-proof threads, provide added strength and waterproofing. BREATHABLE and WATERPROOF: Superior breathability ensures air circulation and protects against moisture build up and musty odors.