Delicate Cutouts: Featuring a special front cutout and middle holes behind the armband, this armband is exquisitely designed engineered for iPhone 6/6S/7/8, Compatible with Touch ID button and the headphone Jack. Touch Screen Compatible: Sensitive touch screen gets access to the phone, manage the playlist or activate your stopwatch. The adjustable band supports a wide range of arm girth from 8.3" (21cm) to 15" (38.1cm). Additional 5-inch extender makes the armband longer from 13.5"(34.3cm) to 20"(50.8cm) for varies of arm lengths. Premium Materials: The 2mm thickness Lycra neoprene on the back of armband that makes the armband case easily bends, twists, and folds without wrapping. It touches skin softly and absorb sweat fast to reduce slippage, which make you feel freely on the running.