This is a BAM trombone case. It came with the instrument when I bought it, but I'm selling it because I don't use it. It was included with the purchase of an open wrap instrument, so it should fit both open and traditional wraps. However, I haven't tested it with longer F-attachment instruments like the Bach 42BO or Yamaha 882O, so please be aware of that. I believe this model has been discontinued, so please take this opportunity to purchase it.