Comfortable material: arm sleeves made of knitted ice silk are soft, breathable and sweat absorbent, which makes you feel cool and dry quickly, and will be very comfortable to wear in hot weather; Note: small size, light material, non pressure cuff, not suitable for too thick arms Cooling sleeves size: have large elasticity, approx. 37 to 50 cm in length, wrist circumference is approx. 16 to 28 cm, upper arm circumference is approx. 22 to 34 cm, one size fit most people UV protection arm sleeves: arm sleeves can protect your arms from UV radiation in summer and prevent pulled muscle while doing outdoor activities, sports, etc. Wide range of uses: suitable for both outdoor and indoor activities, can be applied when training, racing, running, cycling, fishing, driving, golfing, jogging, climbing, etc. Practical design: our cooling sleeves are long ones, can cover most part of your arms, will save your skin from sun exposure and UV radiation while doing outdoor activities, suitable for both men and women to use Features:Where to use: These arm sleeves can be applied in various occasions, such as walking, training, cycling, fishing, driving, golfing, jogging, climbing or any other outdoor activities, which are necessary supplies for your life, especially useful in summer. Package quantity:8 pairs of arm sleeves in total, unisex cooling sleeves are suitable for most men and women, can match with most of your outfit, gives you a cooling feel.Specifications:Material:knitted ice silkColors: blackQuantity: 8 pairsPackage includes:8 Pairs of cooling arm sleevesNotes:Please allow 1 to 2 cm error due to the elasticity of arm cooling sleeves and manual measurement.