The Waterproof Armband Case Sports Running Exercise Arm Band Phone Holder / Key Bag is a phone armband case designed for most sports activities. It is made of a premium blend of Lycra and Neoprene, which makes it durable, flexible, and ultra-lightweight. The armband features a reflective edge design, accessible controls, and a sensitive touch screen. It is water-resistant, sweat-proof, and rain-proof. The armband comes with a large capacity pouch for storing keys and other small items. It is compatible with most mobile phones and has dual buckle loops and an adjustable elastic band for fastening.