Enobu Active Flexible Silicone Armband & Case for iPhone 5/iPhone 5S- Black Compatible with Apple iPhone 5 / Apple iPhone 5S. The soft flexible durable silicone case can be used alone without the armband when you are not working out. Adjustable band with velcro end closure allows the armband to comfortably fit most arms (8"-14"). The silicone case is custom designed for the iPhone 5/ iPhone 5S. All buttons and ports are fully accesible. Inserting and removing your device is easy and can be done in seconds. The case and armband can be delicately handwashed after a satisfying sweaty workout.