Anyone know of a good stuff sack this thing will fit into? I really don't want to have to fight to get it in there, but I don't want it moving around much inside the stuff sack either since I plan on attaching it to the outside of my pack. Advice anyone??

Why bother with a stuff-sack? I usually attach mine to the outside, even in the winter and have never had any issues. It's durable and waterproof, and easily cleaned with naught more than a quick shake. The only real problem I could foresee would be if it was super wet, but then a plastic bag would work fine...Agreed: No stuff sack needed. -field tested.I kind of disagree... You can get by without one of course. But if you're attaching it to the outside of your pack, it will scrape against trees and rocks. I just got the large (blue) Therm-a-Rest stuff sack. Then had it tailored to size. Easy in, easy out. Luckily, I know a guy who owns an upholstery shop and works at a outdoor store.If you're going to put foam on the outside of your pack, it's gonna get scraped and cut by trees and brush as you meander past them. Please use a nylon stuff sack with it so that you don't leave orange and gray tatters for the next passersby on the trail. (This means no cheap trashbags either!)