Well, since I work on steel decks, know the importance of good mats. Not sure my company would buy these for me, but the ones I have are quite good.
When I retire again which will including relocating and working out of a kitchen in my home, these are on the wish list.
But for now a dear friend of mine has awful arthritis and I have ordered these as a Christmas present for her. On two other forums the reviews were great from people with back and leg troubles.
here are the reviews from thier website if you haven't seen them--https://www.gelpro.com/page/reviews