This is the MAK-BAG/S case for Markbass head amplifiers. It's a very rare color. I purchased it at a musical instrument store for 12,800 yen, but I haven't had a chance to use it, so I'm selling it. It can be used with the Little Mark Ⅲ, IV, Little Mark Vintage, and other models of similar size. The ventilation holes are properly open, so you can use it with the case on, which is very convenient. It comes with straps for carrying it on your back. I hope you will consider it. Thank you very much. The Soundhouse product page is: https://www.soundhouse.co.jp/products/detail/item/155810/ For your reference.