Began to cause even more back pain!
At first, these heel cups felt like cushy heaven; in the first few hours of wearing them, I thought I had solved a painful back problem.  But after a few days of using a set all day every day, it became clear they added to my already painful back problem by being too thick.  They threw my spine out of alignment and a pinched nerve became excruciating. I could hardly get out of bed or even move around. The only relief was NOT using these for an entire day. Also, they were so sticky that when I slipped my foot into the shoe, the heel cup moved forward with my foot.  I had to hold the cup down with my finger as I put my foot into the shoe. I cannot recommend these, especially if you are dealing with a degenerated spinal disk.
Rating: 2 stars