OOLING UPF 50 PROTECTION innovative cooling technology UPF 50 protection to block out over 98% of harmful UVA & UVB rays, the MIZUNA Outdoors' Cooling Sun Sleeves are more than your average sun sleeves. FOR ALL SPORTS & OUTDOOR ACTIVITIES: Designed for long, hot hours under the sun, our lightweight arm sleeves will keep you comfortable whether you're golfing, fishing, playing basketball, cycling, hiking, driving or even gardening SEAMLESS COMFORT: Unlike other sun sleeves that make you itchy and leave imprints all over your arms, these sun sleeves are seamless. We make sure you'll be comfortable and happy