This is the best one I have found. We have a number of different styles and shapes that I use in all vehicles, tractors, lawn mowers, etc. This has been the best of all of them and I like all of them and use them in nearly everything I drive except motorcycles, and I sometimes use a gel seat on those too.

https://www.amazon.com/gp/product/B07FN7R9TY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1