16'x20' Blue Waterproof Poly Tarp for Camping Hiking Backpacking Tent Shelter Shade Canopy Etc. 1/3 the weight of eight ounce canvas, and light enough to be handled Waterproof and it resists most acids and alkalies. Reinforced with aluminum rust-resistance grommets. Finish size is 15'3" x 19'6" blue tarp