Fabric: fabric is engineered for cutting-edge performance and comfort, including our exclusive technology that accelerates moisture wicking for a cooler workout and helps keep the fabric fresh; Soft, lightweight, breathable, moisture wicking and quick dry to keep you active all day. 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) 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 Foldable & Practical With portable and lightweight design, you can easily roll it into a compact size, which is very convenient to put it into any purse, backpack or handbag. Sunscreen arm sleeve are the best choice for regular daily use and outdoor sports activities, such as fishing, climbing, hiking, gardening, camping, traveling, boating, hunting, beach, park, golf, tennis, safari,etc. 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.