High efficiency base layer features H2X-DRY® fabric treated with Polygiene® Freshness technology to control odor; wear more, wash less. Fabricated to wick moisture away from the skin, helping regulate optimum body comfort during high exertion activities. This 1/4-zip pullover is the perfect base layer for a multi-layer system and offers a UPF Rating 50+ to protect the skin from the sun’s rays