Lower back saver!!!!!
This is the greatest thing if you sit for long periods of time.  It doesn't deform over time.  It has holes so you won't get a sweaty butt.  My lover back is thankful for this.  I have zero regrets buying this.  Works well with any chair including cushioned ones.  I bought this after my computer chair cushion wore out.  Now I can't sit in it without my Wondergel!!!
Rating: 5 stars