Qualified Material - Made with 100% virgin PE material and triple coated lamination for double-sided use, for waterproof and UV resistance & not easy to get black stains in wet weather Sturdy Poly Tarp - 14mil extra heavy-duty thickness and aluminum grommets in 3 1/4 ft (1m) interval for better tear-resistance, weights 54.08Lbs; PP plastics capped reinforced corners with grommets for sturdy construction; All seamless edges avoid water leakage Great for All Application - Great for general pergola canopies, carport cover, camping ground sheet, car covers, boat covers, machine covers, lumber covers, wind protectors, haystack cover, privacy walls, picnic mats and pool cover