Comfortable & Durable Cooling Arm Sleeve is made of durable, weather resistant and stretchy material.Arm Covers are chemical FREE and completely safe for you and your kids. Our sleeves are incredibly durable and stretchy.Easy to machine wash and hang dry. Comfortable & Durable Cooling Arm Sleeve is made of durable, weather resistant and stretchy material. Arm Covers are chemical FREE and completely safe for you and your kids. Our sleeves are incredibly durable and stretchy. Sun UV ProtectionSun protection arm sleeves with the newest UPF 50+ protective technology for effective UV protection,whick can block out over 98% of harmful UVA & UVB rays to offer your arms an all-around UV protection. Say goodbye to sunburn &sunscreen Wide ApplicationIdeal for all sports & outdoor activities. Great skin protection when running, golfing, driving, cycling, fishing, jogging, gardening, football, basketball, tennis and so on. Also the black color great for tattoo cover-up. 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) 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.