Waterproof Workout Sport Outdoors Gym Running Armband Case Pouch with Key slot for BLU Studio 5.0 C HD/Studio 5.0 II/Studio 5.0S II/Win HD 5 Inch/Win HD W510L (Black) keeps your phone safe when you are exercising Soft-touch neoprene case hold your device securely Velcro strap to secure excess headphone cord Waterproof backing and Full screen protector allows full touch screen functionality Slit in back for a key,money ,loose paper etc