Stylish belts

Exploration Stage: Moon Gate
From: Detective
Description: I realized I had to disguise myself properly and go as a player in a card cheater's store. That way they wouldn't know it was me. So I needed a suit that a would-be game club goer would wear. First, a fashionable wide belt with a hidden pocket. I'd appreciate it if you could find it for me.
Completed: I don't feel safe yet. There are many other things we need.