【BREATHABLE AND COMFY 】 The arm sleeves are made of cooling stretchy fabrics, 90% nylon and 10% spandex.these sun protection arm covers are soft and smooth to touch, skin-friendly and breathable to wear, making you feel cool and comfy under; And the ice silk sleeves are also not easy to fade and tear, durable and practical for long-term use. | 【Thumb Hole Design】 Our ice silk cooling sleeves have a thumb hole, it will not hinder your work While protecting the back of your hands. Of course you can ignore the hole and wear it directly if you don’t need the hole. These arm sleeves are One Size Fits Most and will fit men and women, adults and teens. | 【UPF 50 UV PROTECTION】The premium soft fabrics can block out as high as 98% of harmful ultraviolet to avoid the sunburn. These sun sleeves for men and women are ideal for PROTECTING yourself from the sun on hot days, NO blisters and peeling skin. | 【 FOR All ACTIVITIES】 our arm sleeves protectors are designed for long hours of activities in the hot sun. The UV cooling sleeves protect your skin from the sun whether you're running, golfing, playing basketball, tennis, boating, fishing, cycling, driving or even gardening. | 【BUY WITH CONFIDENCE】our sun protection arm sleeves offer your arms an all-around sun protection. Contact us if you are not satisfied with it. We’ll process refund or send you a replacement . All issues will be solved within 24 hours.