Just hit the $1 Wal-Mart bin & would love to know what I've got. Is there anyone who could help me if I sent them a small piece & how big would it need to be? It's not extremely important because I'm going to "learn/practice" on this material, but would like to know what it is anyhow. Also what are good starter projects to get the feel of working with these light slick fabrics? (I'm thinking stuff sacks to start). My goal is of course to make my own hammock, underquilt, & especially tarp. Thanks ahead for any help.