Upon receipt of the Plasma 15 I was immediately impressed w/ the material; even the stuff sack is really nice :). The bag is very light weight, and very water resistant. I tried it out in 32 degrees F; i never buttoned up all the way 'cause it was too warm. The neck baffle that keeps air from going down past your neck is fantastic. I have not gotten in a more comfortable bag, ever. Props to Marmot on a great product; it's about to get some serious trail use :)
This review was written in the old system and had content requirements that are different than reviews written today.