This is an elastic cummerbund. I also own a plate carrier, but I'm selling this because I replaced the cummerbund. I replaced it immediately, so it was only used for about a month and just for fitting. It fits well and satisfies the desire to own it. Arid is rare, so you won't see anyone else with it. It costs over 20,000 yen if you buy it new, so I think this is a good deal.