Virus Men's Stay Cool Short Sleeve Cool Jade Compression Top 82% Nylon, 18% Spandex Imported UPF 50 offers great protection from harmful UV rays Compression pattern focuses compression's benefit, allows for range of motion and minimizes core restriction Advanced fabric keeps skin surface temperature up to 10 degrees F warmer Ultra-wicking fabric construction keeps skin dry and comfortable Ventilated V-neck design adds to airflow and neckline comfort