Aqualibrium™ is tough to accomplish. We've done it. In our Pro-V Max Long Sleeve Zip Neck, you'll feel the difference. With incredible wicking power this is one baselayer that is sure to keep you warm. *Descente's exclusive Pro-V Max fabric is a heavyweight, luxurious, spun and low-pill fabric providing a soft hand. *Zip neck with draft flap. *2.5" high collar with collar tape. *Contour cut and snug to the body. *Descente "red basewear" logoing. *Superior Aqualibrium™ functionality.