Created for active lives this LeMieux Ladies Base Layer, will help regulate your body temperature keeping you cool or warm when needed, the UV50+ protection with moisture wicking antimicrobial material that also has 360 degree stretch, the silky-smooth fabric and ultra soft flat-lock seams to reduce chafing making it feel like a second skin. Can be worn on its own or looks great layered with gilets or jackets.UV50+ protectionHelps regulate body temperatureMoisture wickingVented under arms for breathabilityAntimicrobial material360 degree stretchUltra soft flat-lock seamsQuarter zipMachine washable at 30 degrees