Crafts new Zero Extreme concept piece merges two of our most battle hardened fabrics, Zero and Cool plus body mapping for our most advanced base layer to date. Featuring COOL Superlight moving wing panels across the pack and cuffs the best moisture management and temperature regulation available. Our ZERO fabric stays in contact with your body, pulling excess moisture away from your skin, while simultaneously keeping you warm. Our COOL outer fabric allows air to circulate around your body and further promote moisture expulsion. ZEROextreme also features an antimicrobial treatment to prevent fabric odor from setting in. Guaranteed to be the best fitting, best performing and most comfortable base layer yet.