This is a trading card holder. Size: 8.9cm (height) x 6.3cm (width) (insertable size) Made with UV resin. While I make them with care, these are handmade items by an amateur. There may be unevenness, air bubbles, dust, missing parts, etc. Also, there may be initial defects in the case. Please understand that these are handmade items before purchasing. Please read the profile before purchasing. Trading card, key holder, case, UV resin, resin, deco, hard case, Korea, K-POP, k-pop, ASTRO, seventeen, TWICE, BTS