A super-cooling tech tee with stretch and sun protection, this soft and lightweight men's shirt sports our industry-leading cooling technology, which reacts with your sweat to lower the material's temperature and keep you cool during dynamic aerobic activity in the heat. Features:- Omni-Freeze ZERO sweat-activated super cooling- Omni-Wick- Omni-Shade UPF 30 sun protection- Modern Classic Fit- Comfort stretch- Antimicrobial- Center Back Length: 28 inSpecification:- 100% polyester ZERO interlockTechnology:Omni-Freeze ZERO:- MAKING HOT PEOPLE COOL: Blue rings react with sweat to lower the temperature of the fabric, so you feel cooler.Omni-Freeze:- GET YOUR COOL ON: Fabric that releases heat to help you feel cooler.Omni-Shade:- ENJOY THE SUN SAFELY: Blocks UVA and UVB rays to help prevent sunburn and long-term skin damage.