This is a LeSportsac special multi-case from a mook book. It's a trifold design with a Velcro closure, and it can store cards and masks. It can also be used as a wallet. It can also be used widely as a detachable shoulder bag. 18cm tall x 11cm wide (33cm when opened) I have taken it out of the bag, but it is unused. Please understand that it has been stored at home. Thank you.