Thank you for viewing. This is a ProTec clarinet double case. It came with the instrument when I purchased it used. I am not using this one as I use a single case separately. The condition is not very good, as shown in the pictures since I bought it, but it functions perfectly as a case. It has a lot of storage, so it's convenient. I am selling it due to moving. If it doesn't sell, I will throw it away. Would anyone who can make use of it be interested?