This UV50+ quarter zip base layer is designed to help regulate your body temperature, making it ideal for various activities like running, cycling, or walking the dog. It features ventilated underarms to keep you cool and dry, along with moisture-wicking and anti-microbial properties. The 360° stretch fabric ensures unrestricted comfort. The silky fabric, ultra-soft seams, and flatlock stitching are engineered to reduce chafing and minimize bulk when worn under other clothing. This base layer is part of a collection designed to coordinate with LeMieux hat silks, saddle pads, and fly hoods in popular colours. It is machine washable up to 30 degrees. For best results, turn the garment inside out before washing, wash with similar colours, and use only washing products. Do not bleach, dry clean, or tumble dry. Air dry away from direct heat sources. Iron on a low temperature, avoiding the logo areas.