Knockout case, well worth the money. You always get someone who wants to help carry your gear at the end of the night and with your Ibo, generally want to have a go on it too, so this will stop you getting it knocked and banged while being transported. It's really well made and has a pocket to keep any bits and pieces in. Heavy duty zipper and material with plenty of padding but very light to carry. Excellent choice for your prized instrument.