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. The fabric has UV50+ protection and is moisture-wicking, antimicrobial, and offers 360-degree stretch for comfort and freedom of movement. It features ultra-soft seams with flat lock stitching to reduce chafing and minimize bulk when layered. This quarter zip base layer is machine washable at 30 degrees.