When temperatures get lower, UYN ULTRA1 is the long-sleeved running shirt that can give you unmatched performance. This is possible thanks to FREELEASE technology, the exclusive one-seam construction that eliminate any chafing point delivering maximum freedom of movemnt. In the chest and back area the GRADUAL COOLVENT structure quickly absorbs sweat and allows better ventilation keeping the body cool and dry: ready for great perfromance.