Tarp Cover12X20 Silver/Black Heavy Duty 8 Mil Thick Material, By Massey, Waterproof, Great for Tarpaulin Canopy Tent, Boat, RV or Pool Cover!!! Tarp is made from extra strength weave and has a heavy duty double laminated coating. It has a rope reinforced hem and heat sealed seams and grommets every 3 feet. It is available in assorted thicknesses and colors: Blue, Green and Silver. Product measures according to finish size and not cut size which is labeled on the package.