I have worn the furnace quarter zip for a couple of seasons now and I have not been disappointed. I have worn it here in WI from bow season all the way to late gun season and during some waterfowl hunting in between. It is very warm and it a great option to have underneath a sweatshirt or a jacket. I have even worn it all by itself during some warmer hunts without any issues. This quarter zip is packed with me on almost all my hunts and has made me a believer of buying some quality warm gear. I would recommend it to anyone who is considering purchasing one.