FITS WITH OTTERBOX - This running armband is designed with extra room to accommodate an Apple iPhone SE, 5, 5s, 5c or 4, 4S with a large case such as OtterBox Defender or Commuter Series Case. EXCEPTIONAL COMFORT & SECURITY - When designing this cell phone armband we carefully selected a special type of hook & loop material that stretches enabling it to hold firmly without slipping or feeling too tight. Combined with super soft neoprene, it provides an amazing balance of comfort and security allowing you to move freely through your exercise. SWEAT-RESISTANT DESIGN - This gym armband provides excellent protection from sweat because the neoprene fabric wicks away moisture and the entrance was designed without any openings on the back where your device could be exposed to perspiring skin.