Worn three times, only for walking for less than two hours each time. I'm selling it because the size wasn't right when I bought it. I felt it was very warm and not too bulky. I will send it compactly. It has thumbholes, so air doesn't enter from the sleeves, and it's warm. It's still cold, so please consider it. BVD Grid Tech Instant Warmth Inner Shirt Navy Navy Blue Thumbholes Shirt Top