Premium Materials:Made of stretch resistant neoprene, ultra-thin u0026amp; light-weight, sweat proof, waterproof, durable and hand washable, easily bends, flexes, twists, and folds without warping.Perfect fit for iPhone 7, 7 Plus, 6s Plus, 6 Plus u0026amp; Samsung Galaxy Note 4, also fits with Cellphones up to 5.7 Inch.)nFull Touch Screen Functionality: With a clear protective screen cover, you can exercise for hours with entertainment, stay connected and enjoy great comfort. Built-in hidden key holder to help you minimize carrying extra things when hitting the gym!nBuilt-in hidden key holder: You can put a Key, a credit card, cash, enjoy your music and audio while jogging, Cycling, running, exercising, or working out, and the strong sticky back tape ensures that the armband do not fall off when you are exercising.nAdjustable design: the armband is available in two different strap sizes, to accommodate different arm circumferences. supports a wide range of arm girth from 10.8u0026#34; (27.5cm) to 17.3u0026#34; (44cm).nExtra Features: Built in Reflective strip for safe running in low light conditions, precise Cutouts for easy access to headphones port and controls, Easy access to all ports, sensors, speakers, cameras and all Phones features.n