This UV50+ quarter zip base layer will assist control your body temperature whether running, riding, or walking the dog, and it has ventilated underarms to keep you cool and dry. Sweat-wicking, anti-microbial, and featuring 360 stretch for unrestricted comfort, this base layer can do it all. The silky-smooth fabric, ultra-soft seams, and flat lock stitching eliminate chafing and bulk when worn under a fleece, jacket, or gilet. Designed to match the most popular LeMieux hues for hat silks, saddle cushions, fly hoods, and other accessories. Sweat-wicking fabric with UV50+ protection Vented under arms for breathability 360 stretch for comfort and freedom Ultra soft seams with flat lock stitching 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+ protection Helps regulate body temperature Moisture wicking Vented under arms for breathability Antimicrobial material 360 degree stretch Ultra soft flat-lock seams Quarter zip Machine washable at 30 degrees