Opti-Dri technology transfers moisture away from the body to keep you cool and dry — UV Repel technology keeps skin safe from the sun's harmful rays —UPF 50 — Stretch fabric moves with you to increase your range of motion — Thermal fabric provides an extra layer of warm comfort —Full zip with Callaway signature zipper pull —In-seam open side pockets —Vertical zipper placket pocket detail on left chest —Contrast embroidered Callaway logo on right sleeve.