Waterproof & UV Resistant Double-side Used Cover - Made of 100% brand-new PE material and triple coated lamination for double-sided use, silver layer for resisting sunlight in sunny day, black layer for maintaining heat in cold day, both side for waterproofing, UV resistance & not easy to get black stains in wet weather Sturdy Poly Tarp - 10mil heavy-duty thickness and aluminum grommets in 3 1/4 ft (1m) interval for better tear-resistance, weights 13.85lbs; 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