This is a cute, clasp-style smartphone pouch made with vibrant African fabric. It has a pocket inside for cards and a large pocket on the outside. I think it's the perfect size for a quick trip to the convenience store! Also, when you're out and about, a smartphone pouch will keep your phone from getting lost in your bag – I do that all the time (≧∀≦) The clasp is sewn on securely, so I think you can use it roughly and it will be durable (*´艸`) About the shoulder strap: Made with durable polypropylene webbing. Width: 10mm / Length: Adjustable from 70cm to 125cm. It can be removed, so use it depending on the situation♪ You can choose from 3 colors. *If you don't select a color, the beige color in the top image will be sent. All metal fittings such as the snap hook are antique gold. Clasp: 10.5cm wide, square Overall size: Width 13cm, Length 19.5cm Shoulder strap: Adjustable from 70cm to 125cm