☀High Quality Breathable Material: The black sleeve is made of high quality soft fabric, 70% nylon and 30% spandex, it feels soft and does not cause allergic skin reactions. At the same time, it has extremely strong elasticity and excellent hygroscopicity. It is generally suitable for most people. You can use it with full confidence. ☀Breathable and Comfortable: High-performance arm sleeves can sweat and dry quickly, ensuring excellent comfort and keeping skin fresh throughout the day. The sleeve can give you a cool and icy feeling, thus avoiding the sticky and unpleasant heat from the sun for a long time. ☀Prevention Capability: With improved sun protection technology, the long sleeves are specifically designed to block harmful UVA rays and help protect the skin of the arm. Prevent sunburn, including sunburn. While utilizing unique seamless knitting technology, our stretch fit sleeves will definitely stay on your biceps to prevent accidental scratching and bruising. ☀Easy to Use: The sleeve has high elasticity and can be easily worn and removed. You only need to wear it on your arm or leg. Anti-slip elastic band at top and finger hole design prevent sleeve from slipping off arm. Comfortable to wear, they are suitable for the arms of most people without any pressure or discomfort. ☀Wide Application: The sleeve is suitable for outdoor work or outdoor activities, such as golf, cycling, fishing, driving, jogging, mountain climbing and other activities. It is also suitable for indoor activities, including at your workplace, to keep warm in the air-conditioned room.