This Coolcore Short Sleeve Cooling shirt features the best cooling technology on the market. Integrated with Hollow Core fabric technology, each individual fiber has a hollow core. Allowing for 45% faster drying and 19% faster cooling times than other "Performance" cooling shirts. Additionally this 4-way stretch fabric is incredibly soft, ultra-lightweight, and comfortable against your skin. Lastly, the moisture wicking hollow fibers disperses moisture including sweat throughout the shirt eliminating traditional sweat spots. Including UPF 50 Sun Protection this lightweight short sleeve summer shirt has you covered. This Coolcore Short Sleeve is ideal for sun protection at the beach, fishing, pool, or just around town.