Earhoox Armband &mdash; Water Resistant - Adjustable Sports Band &mdash; Lightweight, Breathable Neoprene &mdash; Compatible with iPhone 4-7 & Samsung S2-S6 &mdash; with Built-in Key Holder ADJUSTABLE BAND: The Earhoox Armband is a unisex workout band that quickly adjusts to meet the size of your arm to offer a snug, comfortable fit. HIDDEN KEY HOLDER: A discrete, built-in hidden key holder comes standard on every Earhoox Armband so you never have to leave your house, work or locker key behind while you exercise. SMART PROTECTION: Our adjustable holder provides fitted protection to keep your smartphone from jostling around or falling, while the clear, touch-sensitive screen cover keeps your screen free of dirt, dust and scratches. REFLECTIVE STRIP: Working out happens at all hours of the day, which is why weve added a reflective strip that can easily be seen in low light running conditions. PREMIUM NEOPRENE: Developed using high-quality neoprene, the Earhoox Armband is slim, lightweight, and water resistant. It also stretches to let you flex and move while exercising.