Inner dimensions: 9cm x 5.5cm. Comes with a clip and safety pin. I received this for work previously, but I no longer need it, so I'm selling it. It's used, so some parts are coming loose. Name tag deco, deco name tag, trading card case deco, trading card deco, lace deco, trading card case, K-pop, kpop, mass production style, "jiggy" style, ballet core, hard case deco, hard case, pashakore, pashat'su