Mountain Hardwear M Butter™ Half Zip

This perfectly moisture-wicking base layer is buttery soft and allows you to move effortlessly through any environment without chafing or overheating. The Butter ½ Zip is a versatile all-around stretch top that fights odors, so you can wear it multiple times before it needs to be washed. With a half-zip front for easy ventilation and flat thumbholes, it's a must-have for long days on the trail or all-day travel.