Arctic Cool Men's Sleeveless Instant Cooling Shirt with Mesh Side Panels 95.5% Polyester / 4.5% Spandex Imported The go-to shirt for men that love to keep comfortable and cool in their active lifestyles. Athletic cut for ease of movement - if in doubt, go up one size Revolutionary HydroFreeze X Technology disperses moisture and optimizes the natural evaporative cooling process without leaving you cold or chilly Wicks moisture away from the skin, then disperses it throughout the shirt, keeping you dry and relaxed Unconditional Money-back Guarantee! If you're not completely satisfied with the Arctic Cool Instant Cooling Shirt with Hydrofreeze X Technology, we'll replace or refund your purchase price. Spritz with water for an instant cooling effect or put on for all day wear and comfort!