Thinner and more flexible than regular foam. Can't be cut by thread. Great for Emergers, Chernobyl ants and other terrestrials. 2mm thick. Per 3. Size: 5 x 8 Colors: White, Chartreuse, Black, Yellow, Orange, Tan, Olive Green. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Foam.