Superior Cooling: The sunscreen arm sleeve is ice silk fabric, which helps to cool your skin for 3 hours after absorbing sweat or water. It is the exact provides you with the cooling and comfortable feeling throughout the whole hot days. Cooling & Upf 50 Protection With the newest UPF 50 protection technology, cooling arm sleeves block out over 98% of harmful UVA and UVB rays and set you free from sunscreen,while the use of high-elastic fabrics allows you indoors or outdoors activities comfortable and happy. Wide Range Of Uses For all outdoor sports and activities. The UV cooling sleeves will protect your skin from the sun whether you're running, golfing, playing basketball, tennis, boating, fishing, cycling,driving or even gardening Seamless & DurableThe compression arm sleeves with a delicate fabric material and fine sewing skills. The fabric is reinforced and won't unravel or tear easily even washed for long times. (with laundry bag for machine wahing,hand wash is more recommended) Breathable & Comfortable To Wear The quick dry Sunscreen arm sleeve fabric technology lets your sweat band dry in minutes. It provides customers excellent wearing experience with breathable and stretchy.The moisture wicking fabric seamless bandana makes you feel cool and comfortable, and keeps you cool in the summer and warm in winter. 100% Guarantee Satisfaction We are confident in our products and please feel free to contact us if you're unhappy with your purchase. We offer 100% money back guarantee if are not happy with the item.