The adiZero II is the everyday performance cap for lightweight protection, comfort and fit. Includes climacool mesh for maximum breathability and moisture-wicking. Introducing ultimate sun protection with minimum 50 UPF to inhibit harmful UV rays. Lightweight, 6-panel performance cap. climacool mesh provides ultimate air flow and moisture-wicking. 50 UPF built into the fabric to guard against the sun’s most harmful rays. Hook-and-loop back closure for adjustable fit. Non-glare undervisor for best vision while running and training.