This perfect moisture-wicking base layer is buttery soft, allowing you to move effortlessly through any environment without chafing or overheating. A versatile do-it-all stretch top, the Butter ½ Zip fights odor so you can wear it on repeat before it hits the wash. Featuring a center front half-zip for easy venting and low-profile thumb holes, it is a must-have for long days on the trail or all-day travel.