WonderGel Extreme is Wonderful
Spend a lot of hours in the car and would not be able to walk easily afterwards were it not for this cushion. Works exactly as advertised. Just don't leave it in the car on a very cold day (winter). You'll be riding home on what feels like an ice brick! Only made that mistake once. Now I just take it inside with me. I often use it for those too-low, meeting-room chairs that are always so uncomfortable.
Rating: 5 stars