Under Armour HeatGear Compression Long Sleeve Top HeatGear moisture transport ensures fast drying performance that keeps you cool and won't weight you down. Delivered in the signature compression fit for bolstered muscle support and increased circulation resulting in higher efficiency output and increased stamina. UPF 30+ for protection from harmful sun rays whilst out running or exercising. Heatseal logo and back Locker Tag - means the logo won't peal off or cause chaffing. Perfect beneath your pads or uniform.