The pocket has a built-in spring steel clip that automatically closes and is easy to use, designed to store earphone, earbuds, small essentials, keys, coins that you need when you travel on the go. Keep it in your purse, luggage, gym bag, or backpack without cords getting tangled or damaged. Slim light weight design fits in a purse inside your pocket, backpack. Also a great coin purse, you can storage many other stuffs inner.