I shifted position less often, and I bought it after too many uncomfortable afternoons in the office chair. It kept its shape through a full sitting session. The cushion raised me just enough to sit squarely at the desk.
These seat cushions suited the job I had in mind. It takes little room, and the finish feels solid.
The black covers are made of a breathable mesh-like material that doesn't get too hot, even after sitting for a long time. They look sleek and professional, blending in perfectly with both my car interior and office chair.
These cushions have completely transformed my daily commute. The memory foam is firm enough to provide real support for the lower back and tailbone, but soft enough to be incredibly comfortable for hours of sitting.
I love that these don't slide around. The bottom has a great non-slip texture that keeps the cushion exactly where you put it, so you don't have to constantly readjust it every time you sit down or shift your weight.