The Columbia PFG ZERO Rules L/S Shirt is a super-cooling tech tee with stretch and sun protection. The Performance Fishing Gear PFG collection is specifically designed for mobility and protection with the angler in mind. Omni-Wick fabric~ Moisture-wicking fabric moves perspiration away from the skin to dry quickly on the surface. Four-way stretch for improved range of motion. Omni-Freeze ZERO is a cooling technology that uses your own sweat to activate a cooling agent close to your skin so that the more you sweat the cooler you get. Omni-Shade UPF 30 fabrication protects your skin during outdoor activity by blocking harmful Ultraviolet A and Ultraviolet B rays UVA and UVB. Standard fit is eased, but not sloppy, and perfect for any activity. A classic long sleeve tee with a crew neckline and tapering sleeves. 100% polyester. Machine wash.