All the difference in the world!!
I have sciatica that almost exclusively bothers me after 2 hours in the car. We take many long car rides and I was in agony consistently after about 2 hours. Pain that was burning and radiated down my leg. I needed something so I looked at all the reviews and chose this. I went a full 6 hours in the car with no pain. An amazing difference. Wish I had got it sooner. Hope it works this well for everyone else.
Rating: 5 stars