Fabric:Sunscreen arm sleeve 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. 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. Gift For Your Loved Ones: Pink Box cooling arm sleeves , the protector of the arm, the good friend of the summer.And while you are at it, grab a few pairs for your family, friends, or loved ones as a gift Also, a great gift to runners, athletes, fitness workouts, hiking, tennis, cycling, or anyone on their hand 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) 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.