Black Tyvek Ground Sheet [Kit] 45" By 96" w/ 4 Quik Stik Grommets + Tie-outs Lightweight, Durable and Waterproof 4 Quik Stik Grommets that you stick on, 4 Mini Bungee Tie-Outs Black Tyvek is 5 mils in thickness [homewrap is 6.4 mils] Dimensions are 45" X 96" [can be trimmed to your liking or to shed ounces] This Kit weighs less than 6 ounce