Recommended for indoor and outdoor projects. Tarps are lightweight, easy to handle, rot proof and shrink proof, UV protected and useful in cold temperatures. Tarps are manufactured from low density polyethylene, laminated on both sides with high density polyethylene which make the tarp strong, tear resistant and 100% waterproof. ^^ Plastic with built in ultraviolet sun protection ; Medium duty ideal for light household projects ; 10 ft. x 12 ft., construction, boating, camping, landscaping and roof ; Water, mildew and tear resistant ; Rustproof, aluminum grommets every 36 in.