Men's HeatGear Longsleeve Compression T-Shirt Tops by Under Armour New ergonomic fit adds to an overall comfort by reducing abrasion in high impact areas Anti-Odor Technology prevents the growth of odor causing microbes HeatGear moisture transport ensures fast drying performance that keeps you cool and won't weigh you down Delivered in our signature compression fit for bolstered muscle support and increased circulation resulting in higher efficiency output and increased stamina UPF 30+ protects your skin from the sun's harmful rays and inhibits premature aging