"I recently sent in the left seat from my Cherokee Six to have the seat foam (upgraded)... I installed the seat the day it arrived and flew the plane for the first time that night. The seat seemed very firm for the first few minutes, and then I forgot about it. I flew 6.5 hours yesterday, from Lake Charles, Louisiana to Columbus, GA to Wilminton, NC, and back to Louisburg NC. I dodged thunderstorms, flew through turbulence and rain, and never once felt the need to squirm around in the seat.