It's convenient for going out because it has a strap and can be opened and closed with a zipper♪ You can also use it to store things like your medicine notebook and medical examination card, which you want to take out quickly. The pink color inside is also cute! Color: Black系 (vinyl coating) Size: 20cm tall x 14cm wide (When opened: 20cm tall x 28cm wide) Specifications: Detachable strap Adjustable length (maximum 112cm) Thank you for viewing.