These eye catching, fully trailerable covers are made from stong, durable 6.25 oz polyester. They can withstand harsh environments and offer excellent mildew and and water resistance. The unique design spreads strap tension evenly across the cover surface and sewn-in air vents provide proper air circulation under cover. Each cover includes a storage bag, tie-down straps, and a support pole (22"-54" length) for a complete boat cover care system. Five Year Warranty.