UPF 50+ Ice Silk Sun Protection Arm Sleeves, blocking 99% of UV rays. With high-level UPF 50+ sun protection, they effectively block UVA and UVB rays, keeping your arms from tanning or burning while driving, cycling, or enjoying outdoor activities. Made from cooling Ice Silk fabric, these sleeves feel cool and silky to the touch. They’re lightweight, breathable, and won’t trap sweat, keeping you feeling fresh even during extended wear in the summer. The extended design covers the backs of your hands, providing full sun protection and eliminating uneven tanning. The open-finger design allows for easy use of your phone and driving controls. Can customize your logo on it.