LifeProof iPhone 5 1335 Armband - Black Designed to fit your LifeProof for iPhone 5 Case Perfect for running, swimming, walking, lifting, training and living with your iPhone in tow Non-slip silicone dots keep your iPhone armband in place for the long haul Adjusts to fit biceps measuring between 10" and 23" Smooth, waterproof spandex material is perforated for exceptional breathability