OK...there's been a lot of interest in the fabric so here goes.

It's poly/cotton blend. Probably about 10 ounces. I get all my camo fabric from a local fabric store that for some reason carries loads of camo, both military and hunting patterns. I've located this site that carries a great selection. Just be sure to always go for the poly/cotton blends...100% cotton just won't work.

http://www.vtarmynavy.com/camo_material_and_fabrics.htm