A super-cooling tech tee with stretch and sun protection, Columbia® Men's PFG Zero Rules™ soft and lightweight fishing long sleeve uses their 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. Omni-Freeze ZERO™ sweat-activated super cooling Omni-Wick™ technology actively breathes and pulls moisture away from your skin Omni-Shade™ UPF 30 sun protection Antimicrobial treatment protects this product from bacterial growth Regular Fit: universal, easy fit for comfortable range of motion Imported Product Features: Fabric:100% Polyester Omni-Freeze ZERO™ Interlock Columbia Men's PGF Zero Rules Long-Sleeve Shirt