It works fine on both electric and acoustic instruments, providing a stable support in both cases.
Thanks to its shape it s very useful if you need to support the neck on a longest section of it, to get more stability during frets working for example (electric or semi-acoustic instruments, no thick bodies) and you can always adapt it on the specific support you need: quite versatile!
I have used it many times to date but not for years. If one day I need to wash it, I don't know how quick and easy this operation can be, considering the consistency of its padding.
At the moment, however, I am satisfied with this alternative to the other two neck rests I own because it allows me more variety of choice depending on the work I have to do on the instrument, as well as being able to operate on multiple instruments at the same time.
Considering this tool as a whole, a slightly cheaper price would perhaps be more appropriate