This sleeveless polo features our patented icefil® technology fabric. it works by converting sweat to refrigerant; cooling your skin 3 to 5 degrees, allowing you to be cool, comfortable, and dry on the hottest humid days. this garment also has built-in upf 50 sun protection, moisture-wicking, and anti-microbial properties. Wear the sleeveless polo to all athleisure activities!