The case is extremely light and robust, very well made. Fits into most back packs, even if you are also carrying school material and/or notes and a music stand. My son is using it for the school band and he is very happy that he does not need two back packs any longer. In the limited left space you can fit a spare reed and a cleaning swab. A YCL-450 and a Buffet Crampon E13 fit perfectly. Ideal if all you need to bring is your clarinet or if on the other side you need so much (stand, a lot of notes, etc.) that the "normal" clarinet cases will not have space for everything. You only need to take care when opening that the right side is placed underneath, but that's a very minor detail. Definitely worth the price !!!!