Made of 210 Denier strong waterproof oxford fabric,won't shrink or stretch.Double PVC back coating provides the maximum protection from UV damage and sun fade.Protect your boat from rain ,dust ,snow,UV rays.Double stitched seams,Elastic cord sewn along the bottom.Elastic rope sewn into the hem to help hold tightly to your boat.System quick release button and Easy to handle watchband.Collapsible for easy storage, Designed for both long-term storage, mooring and highway travel