First time did a pressure mapping in the seating clinic in search for a better cushion and turns out I’m already seating in one. Switched to Roho Mosaic cushion 2 years ago from gel foam cushion and felt the difference right away. Roho Quattro select low and high profile did not work for me. To my surprise my cheap Roho Mosaic out preformed every air cushion that i pressure mapped. I drive with one, use one on my office chair and my wheelchair, if looking for air cushion give this one a try sense it is very affordable, got mine on eBay.