Considering that it is a bag that is included once you buy one of the yamaha reface series synthesisers, it does do it's job very well. It's not a high end bag that will protect the keybord from anything, but it will allow for easy transportation and I must admit that all the available spacing inside is welcomed. Overall, it is a nice and welcoming addition to the reface series. If you are touring a lot, however, I would recomend a case from Thon. Otherwise, if you use it mainly for domestic use, then it performs as brilliantly as you would expect.