Hokey Smoke ! What brought this 6 year old thread back to the top?
As long as the thread is open....
Years ago a friend of mine gave me a General Tools version of the product shown in the link below. At first I thought "I'll never use that". Then I started using it and I love it. It's thin and low but the padding is great. Folded it's great as a kneeler. I've patched mine several times (weak seam stitching) and will keep patching until it is more patch than pad. Then I will definitely replace it.
Harbor Freight Item 93896 (or equivalent folding foam pad)
https://www.harborfreight.com/folding-mechanics-pad-93896.html