🚲 COOLING UPF 50 PROTECTION: The latest cooling technology UPF 50 protection blocks almost 99% of harmful UV rays for maximum protection against sunburn. No need to use sunscreen. When you wear the sleeves, it plummets 5 degrees to keep you cool all day long on hot days.🚲 ADVANCED MATERIAL: The UV Arm Sleeve is made of compression fabric that absorbs moisture and sweat. It kicks away sweat and dries quickly, ensuring outstanding comfort and keeping your skin fresh all day long. Made from the softest, smoothest, highly elastic material, the sleeves remain in mint condition with no hooks or pilling, no matter how much you use them.🚲 EASY TO WEAR, NOT EASY TO SLIP: We use reinforced strong thread with flat seams to enhance your comfort and wearing experience. Cuffs with high elastic bands hold the sleeves in place during daily activities. Even if you are an athlete who requires strenuous exercise, the sleeves will remain securely fastened to your biceps and will not slide around.🚲 COMFORTABLE AND BREATHABLE: High-performance fabric wicks away sweat and dries quickly, ensuring outstanding comfort and keeping your skin fresh all day long. The non-slip elastic at the top and bottom s that the sleeve won't slip off your arm. The arm sleeve fits most arms without any pressure or discomfort.🚲 SUITABLE FOR ALL ACTIVITIES: old fashioned arm sleeves are especially suitable for many occasions, you can wear them for outdoor activities such as running, golfing, playing basketball, tennis, boating, fishing, driving, biking, fishing, hiking and so on. The UV cooling sleeves protect your skin from the sun all year round.