Comfortable, sturdy, lightweight, and warm - everything you need in a high-performance warm-up top. Crafted from polyester/fleece knit fabric, our glacier Half-Zip fleece has a secure fit, full underarm gusset, and flat lock seams for maximum comfort and range of motion. The textured interior and front zipper provide warmth and let you moderate your core temperature, whether you're working out or on a walk. The zippered chest pocket is a convenient place for keys and ID. A jacket that motivates your to move, Fabric: Polyester 94%/Spandex 6%.