Great solution and it works fairly well after some years now. Only one of the pieces is not sticking so good, but it's an easy fix.
I mean, remember this stuff is supposed to stick to the furry inside of a guitar case, where noone would think that the peel off sticker on the underside of this would ever stick on fur.. but it does.
This is great for keeping the guitar tight and snug inside the case. The only complaint is that I wish this was made with a little more rigid type of foam.. but it's fine