I've been using various guitar supports that attach to the guitar with suckers, which are ok but can become detached and can be a bother when changing guitars having to move it from one guitar to another. This cushion overcomes those problems and is probably the simplest possible solution to provide a comfortable playing position.
It's not adjustable like a stick on support and it took me a while to get used to the slightly different playing position it provides, but once I did, I found it surprisingly effective and stable.
I tend to use this most of the time now and think it would be nice to also have the smaller size to allow for different seating positions.
I Have only awarded it 4 stars instead of 5 as I think it is quite expensive for what it is, although Thomann was by far the best price I found for a genuine Hopf Dynarette.