This is a semi-hard case for euphonium by Marcus Bonna. This item is a special order model for Dolce Music (with added shoulder strap and some leather used), so the specifications differ from the catalog model at the time. Also, it is not a current model. Please note that the detailed specifications are different. It is a 3-way type: hand-carry, backpack, and shoulder. The model at the time did not come with a shoulder strap. Please check the following description. I purchased it almost 15 years ago, and the frequency of use was about 2-3 times a month for nearly 2 years, only for car travel. After that, I used other cases, so I stored it in the closet at home. I think there are no noticeable stains or dirt on the exterior and interior. There is some tarnish on the backpack hardware and zippers. Also, I used it as a backpack a few times (I don't think it was even 4 or 5 times), but the case weighs about 5 kg, so it's quite heavy compared to a soft case. Also, there is a caution regarding the use of the shoulder strap. The current model has shoulder strap hardware fixed to the top of the case, but this model has it sewn into the sides. When I used the shoulder strap at the time of purchase, I felt that there was excessive tension on the case, so before it was damaged, I took it to a bag workshop for canvas reinforcement on the back, reinforced stitching, and added rivets (photos 11-14), but I thought the angle was bad in the first place, so I only used it as a hand-carry after that. Accessories include a mouthpiece case and two sets of backpack straps (one is a cheap commercial product, but I think it's better than the genuine product, lol). New Marcus Bonna semi-hard cases are quite expensive. It's a product from almost 15 years ago, but I think it's still a case that can be used. Thank you. It will be shipped in recycled cardboard.