This is a rear seat attachment for the KATOJI 2-Seater Go stroller. It's the black color, exclusive to the official KATOJI Rakuten shop. I purchased it in 2023 and only used it for travel. I think the number of times I've used it is quite low, but I've taken it on the Shinkansen (bullet train) and airplanes, so there might be some minor scratches. However, it's in very good condition. Thank you.