Perfect for skiing, cold weather running or simply as a base layer under your favorite Craft pants, consider this your own personal climate control system. Craft’s new Pro Zero Extreme merges two of our most battle hardened fabrics, Pro Zero and Pro Cool, into the most effective base layer yet. Pro Zero stays in contact with your body, pulling excess moisture away from your skin, while simultaneously keeping you warm. Ergonomic fit for restrictive free biomechanics. Flat lock seams that follows body movement.