Instructions for Use: Machine Washable About this product: [Tested by Inspection Institution, UPF50+ & UV Cut Rate 99.5%] Material Composition: 100% Polyester. The fabric density is 1.5 times that of conventional products. Achieves a UV cut rate of up to 99.5% and UPF50+. Protects skin from UV rays. Great for daily sun protection and outdoor activities such as walking, mountain climbing, travel, driving, farming, and gardening. [Size] Upper arm circumference 23cm~29cm. *Stretches approximately 35-60cm when worn (slight variations may occur). The material stretches with the movement of your arm, and there is no feeling of tightness. The smooth material makes it easy to put on and take off. We recommend measuring your upper arm size before purchasing. Hand or machine washable. When washing in a washing machine, it is recommended to put it in a laundry net. [Cool Contact Cooling Sensation] Because it uses breathable fabric, you won't feel uncomfortable such as stuffiness even when wearing arm covers for a long time, and a refreshing feeling of use is achieved. Even if you sweat, it won't stick to you, and it quickly absorbs sweat from the surface of your body and dries, and it is excellent in sweat absorption and quick drying, so it is always smooth and refreshing. [Excellent Elasticity & Anti-Slip] With finger holes and silicone on the cuffs, it effectively prevents slippage. Uses power stretch fibers. [Convenient to carry and easy to handle] Lightweight and compact, and wrinkle-resistant, making it convenient to carry. UV protection when you need it.