SumacLife Workout Smartphone Armband with Key Slot (XXL Size) Interior Dimensions: 6.8 x 3.8 Inches - Retail Packaging - Black Keep your phone secure while you work out. Neoprene backing keeps your phone dry. Adjustable Fastener strap. Key slot keeps your key safe while you workout, and saves you from the hassle of bringing your bulky keys along. Screen covering does not interfere with touch screen Access to headphone jack so you can use headphones while using the case Interior Dimensions 6.6 in. x 3.75 in.