Not very helpful, and didn't stay in shoe for long.
I tried using these in some new work boots. While the back is fairly tacky, they just don't feel very good and don't do a good job at keeping my foot in place. After only a few hours of use, they became loose and started to roll onto itself. Once it does that, they are very difficult to get it to unstick from itself without tearing the pad. I would have returned them but frankly it just wasn't worth the effort.
Rating: 2 stars