This arm band is designed and will fit perfectly for apple iphone 7 plus/7(5.5")/6/6s (4.7"). And it will also fit cell phones such as the iphone 5/5s/5c, samsung s8 s7 s6 s5 s4, s3, s2, htc, with headphone support for most all phones as well as any phone that has a screen up to 5.8" COMFORTABLE AND BREATHABLE : High Quality Environmentally Friendly Material, Its Light Weight, Collapsible And Stretchable, Breathable, Its Delicate Texture Helps Absorbing Sweat.Also The Sweat-Proof Lining Allow Your Skin To Breath And Keeps Your Cellphone Dry At All Times In All Activities BONUS FEATURES: 1. Built With Earphone Hole: Put Your Headset Through The Earphone Hole At The Bottom And Connect Your Phone; 2. Our Armband Includes A Reflective Strip For Safe Running In Low Light Conditions. 3. Touch Screen Compatible: Enjoy Full Navigational Control Of Your Phone Such As Receiving Calls, Changing Music, Editing Text Messages Even Games Without Taking Out The Phone