New and unused, but I've lost the storage bag. Originally priced at 5500 yen including tax, but I'll discount it. There's a mesh pocket on the inside of the holder body, so you can tuck the main unit in there and you won't have trouble storing it even without a case. I think it can be used with backpacks other than Arc'teryx, but the attachment shape varies depending on the backpack, which is a drawback. As a bonus, I'll include attachment accessories, so please figure out how to secure it. The 500-yen coin is for size reference only and will not be included.