Hike through the heat in this Men's Zero Rules Light Technical Hiking T-Shirt by Columbia with sweat-activated cooling system to keep you feeling cool when temperatures rise.Key FeaturesSoft, lightweight fabric with stretch offers comfortOmni-Freeze™ Zero keeps you cool and dry with sweat-activated blue rings that absorb moisture and enhance evaporationOmni-Wick™ technology absorbs sweat and moisture to keep you dryOmni-Shade™ technology offers UPF 50 sun protectionRound neckMore DetailsRegular fitMaterial composition: 100% PolyesterSize shown: Medium | Model height: 180cm