Thank you for viewing! This is a keychain-type trading card case. Compatible card size: 6.3cm wide x 8.9cm long, B8 This case has a lid that snaps in from the back. There is a hook on the back, so you can use a pen tip or screwdriver to open it. The contents can be replaced. Each item is made with care. *Trading cards are not included. Due to the use of resin, there may be air bubbles, burrs, warping, color unevenness, dust, and slight color differences from the images. Please consider purchasing only if you understand that this is a handmade item. Since resin is used on the entire surface, it may crack if excessive force is applied. Please handle with care. If parts come off, please repair them at home using glue or resin. We do not accept inquiries regarding detached parts, so please understand.