Product Details:

• HIGH QUALITY&COMFORTABLE WEAR: Polyester Lycra fabrics. Not only durable, but also light and compact for your running.
• SMART PHONE FIT: for most of smartphones including Apple iPhone 5S, 5C, 6, 6 plus, 7, 8, X; Samsung Galaxy Note Series & Samsung Galaxy Series; SONY, LG, or any other smart phone compatible.
• ADUSTABLE STRAPS: With adjustable stretchy straps, it's suitable for waist 26.5"-42", and an extender belt 11.8" to fit for plus size people. 
• AMPLE STORAGE SPACE: Main compartment size: 8.5inx4in(WxH); a big compartment plus a small front bag provide independent protection for your phones from screen scratches, cash, key and watch from Water, Sand, Dust and Dirt. It is easily for running, hiking, cycling, and other outdoor sports with no worries.
• EXTENDER BAND: Increase length by a 11.8" extender for plus size people!