Leiin Sports Armband for Apple iPhone 6 4.7 inch - Key holder Slot, Water Resistant, Sweat-proof, Perfect Earphone Connection while Workout Running. (Gray) Designed specifically for iPhone 6 4.7 inch,Lightweight armband keeps your phone secure and protected. Adjustable Velcro band supports a wide range of arm girth from 10.8" (27.5cm) to 17.3" (44cm). Adjustable velcro strap protects and stabilizes device without slipping or constricting. Water Resistant and sweat-proof function to better protect your mobile phone, make you feel more comfortable during exercise. Built-in Key holder. Cutouts for easy access to headphones port and controls. A sweat resistant layer prevents sweat and moisture from getting in through any cutouts. Built in Reflective strip for safe running in low light conditions