Euphonium soft case. I used it for a YAMAHA large-bore euphonium. While it can't compete with a hard case in terms of durability, it excels in lightness. There's a little extra space inside, so you can fill it with a blanket or something to eliminate gaps. A4 sheet music and small items can be stored. It can be carried as a backpack. I don't see any major stains, but please refrain from purchasing if you are looking for a perfect item. Please feel free to contact me if you want to see any specific areas. I plan to wrap it in bubble wrap before shipping.