This is a soft case for a euphonium. I used it for a Yamaha euphonium. While it doesn't have the durability of a hard case, it excels in lightness. It can store A4 sheet music and small items. 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 would like to see any specific areas. Thank you.