Swasey’s clear pvc vinyl tarps are comprised of 18 Oz, 20 Mil laminated Vinyl fabric that is not only tear resistant but also waterproof and UV resistant. Vinyl Tarps are all stitched with heat sealed seams and rope reinforced edges for long lasting superb quality. Each Tarp is Fabricated Using 18 Oz, 20 Mil Thick. Please Note: ** Vinyl Tarps are made to order and take up to 15-25 business days before shipping to construct. Vinyl tarps are not returnable or order cannot be canceled once it is placed.