Helpful for painful heels
I was a little unsure about getting this based on the reviews, but decided to risk it.  For my purposes (healing talar stress fracture), it works perfectly.  It does add a little unsteadiness, but for me it is very minor, and that's coming from someone with easily twisted ankles.  The cushioning is noticeable but not so great that I couldn't get into my normal shoes, which was important.<br />Unless you have super narrow heels and are already unsteady on your feet, I'd go for it.  I'm already ordering another pair.
Rating: 5 stars