Byoung Men's Outdoor Heat Reflective Super Warmer Winter Cycling Touchscreen Gloves for Smart Phone nylon Unique Heat preservation design: Built in Special Heat Reflective Material inside, will reflect infrared ray to keep your hand warmer and warmer. Fashionable zipper design: easy to put on/off Anti-slip function: silicone alveolate design on palm Touchscreen Function: perfect effect for Smart phone. Form-fit design and Lycra cuff features ensure a comfortable and snug fit to each individual hand