This sacoche can be used like a pocket, and you can easily put your smartphone, handkerchief, glasses, sunglasses, etc. inside. It has a plastic hook for easy opening and closing, and the strap is removable, so you can put it inside your bag as a pouch, or replace it with a custom mensha! mellow strap. It's made of quilted gauze. You'll want to rub it against your skin.