Black Tyvek Solo Ground Sheet [Kit] 36" By 84" w/ 4 Quik Stik Grommets + Tie-outs Lightweight, Durable and Waterproof. 4 Quik Stik Grommets that you stick on with 4 Mini Bungee Tie-Outs Black Tyvek is 5 mils in thickness [homewrap is 6.4 mils] Dimensions are 36" X 84" [can be trimmed to your liking or to shed ounces] This Kit weighs less than 5 ounces