This arm band is perfect for hiking, jogging and exercising. It's ultra lightweight, stretchable and it has a non slip waterproof design. It's made of soft comfortable fabric. It has a transparent screen so you can see your notifications and answer phone calls. There is a little pocked on the inner side of the band to store your keys, credit cards, cash or other little valuables. It has 3 little holes that you can use to plug your headphones in. Compatible with all phones up to 6.5 inches. It has an adjustable strap so one size fits all.