TravelLite™ Seat Cushion by Lifeform®
Product Review (submitted on December 27, 2011):
After ordering and returning 4 seat cushions from other manufactures at last I found perfection with this one. The size is nice and comfy (ordered one from Brookstone that must be made for a size zero bottom) for my size 10 bottom. There is plenty of cushion that is not too soft and not too hard but just perfect! But the best is the removable tailbone cutout, located under the seat cover, just unzip the cover and push the foam cutout and store for later if you want to replace it. Yes its not cheap but for me I was in so much pain it was worth every penny to find the perfect cushion. Also, some reviews have stated the zipper was a problem on leather seats. Although the zipper is exposed, I didn't find it to be extremely sharp or protruding but as an extra precaution since I have a new car with leather seats I did put a small piece of fabric and tape over the zipper. THIS SEAT IS THE BEST SO DON'T THINK TWICE JUST ORDER IT!