Features of the La Sportiva Men's Strive Tank Overlapping seam construction Underarm mesh inserts Polygiene anti-bacterial / odor treatment Polygiene is an active odor control Technology based on natural silver salt for the treatment of High-Performance materials Engineered to give weArers fresh-all-day confidence, polygiene is perfect for active people who demand natural, long-lasting odor protection Fabric Details 100% Polyester