Color: Black [Cool and comfortable with contact cooling] These arm covers, with a flat width of 36cm and weighing approximately 30g, are lightweight and made with high-quality contact cooling material, providing a refreshing coolness the moment they touch your skin. They are convenient to carry and ensure comfort even on hot summer days. [99% UV cut for sun protection] The arm covers use high-performance UPF50+ material, achieving over 99% UV cut to effectively protect your skin from summer UV rays. They are ideal for sun protection during commutes, sports, and outdoor activities. They fully cover both arms, protecting your fair skin from the sun.