When it is cold i wear Rivers West clothing is the best I've seen. It is very light weight but it will amaze you how it keeps you warm. It is totally water proof and wind proof. You only need one layer underneath it. It must be very cold before I can wear it and I usually wear a tee shirt and jeans underneath. There was a group of 6 of us that purchase the Rivers West jacket and pants about 8 years ago at the Mossy Oak store in West Point. We've all use it both hunting and fishing when it is very cold.