WORKS FOR ME
I drove across country, and by Oklahoma, I was in immense pain.  Went into a Love's road stop and asked for a butt cushion.  They recommended the PURPLE seat cushion.  It provided IMMEDIATE relief!  I was able to do the other half of the trip with no prob.  I have read some of the negative comments, and I'm wondering if their's is the actual PURPLE brand.  Mine was on the road in 95+ degree temps.  I didn't get the bad smell that a few have mentioned.  (I mean, WHAT...is it supposed to smell like Grape Jelly?)  It smelled like most new things do when they've been in a box.  I have a plus-size tush and found PURPLE cushion to be beneficial - especially considering that I have a bulging and herniated disk in lower back.  Also, the car has now been parked in garage in sweltering heat.  There's no toxic smell or sticking to my fabric seats.  Again, I'm not sure what the complaints are about.  I am VERY satisfied and buying 2 more as gifts.
Rating: 4 stars