Alpinestars Winter Tech Performance Top
The Alpinestars range of base layer underwear was developed for providing core temperature regulation. Dual density layers provide extra moisture-wicking qualities to keep the body comfortable in both hot and cool conditions. Nobody knows for sure how the magical threads manage to keep you warm when it's cold and vice-versa, but they sure do. There are bottoms to match if you want the complete cat suit, or you can just opt for the top to keep your core content.