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. For All Sports & Outdoor Activities: Designed for long, hot hours under the sun, our lightweight arm sleeves will keep you comfortable whether you're golfing, fishing, playing basketball, cycling, hiking, driving or even gardening. Seamless Comfort: Unlike other sun sleeves that make you itchy and leave imprints all over your arms, these sun sleeves are seamless. We make sure you'll be comfortable and happy. Promotes faster muscle recovery and blood circulation. They are quick dry and absorb sweat, protecting your arms from feeling fresh and cool in the summer. 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) One Size Fits MostThe natural length of men & women arm sleeve is 15 inch and max stretches to 36 inch. the upper arm circumference is 3.7", max stretches to 8 inch. They are durable and stretchy, great fit for all shapes and sizesand teenagers as well as adults of all ages.