RE: Predator answer for Davidmil
David, I've got a 100% wool bomber jacket in Fall Gray... it's VERY warm, and I only wear it on days the temps are well into freezing. Obviously, it's super quiet. It's just a tad bulky for drawing my bow, but plenty workable.
The Wolfskin sorta feels like a mixture between a chamois material and cotton, and it's about as close to being waterproof as you can get without being so. The stuff almost comes out dry after the spin cycle when you wash it. It would take a pretty good extended shower to get youwet, that's for sure.
I don't think it's the most breathable stuff out there; when temps get that high, I'd prefer to wear basic cotton.