Coeuspow Sporty Gym Armband with Scratch-Resistant Dual Arm-Size Slots and Key Pocket for iPhone 6, 6s, 5s, 5, 5c, iPod MP3 Player - Purple Perfect fit for: Apple iPhone 6S ,iPhone 6(4.7 inch),also fits with iPhone 4, iPhone 4s, iPhone 5, iPhone 5c, iPhone 5S and iPod. Not fits iPhone 6S/6 Plus (5.5 inches). Material: Lightweight soft neoprene that is molded to twist and bend but will not stretch out of shape. Water Resistant and sweat-proof function to better protect your mobile phone, make you feel more comfortable during exercise. Functionality: Adjustable stretchy Velcro armband protects and stabilizes cellphone without slipping or constricting,enjoy your exercise.Able to access to headphones, buttons, touchscreen feature on the cell phone. Safety Features: Built-in hidden key holder to help you minimize carrying extra things when hitting the gym ! Built in Reflective strip for safe running in low light conditions. Sizing: Adjustable Velcro band supports a wide range of arm girth from 10.8" to 16.5"