I was disappointed by these. My podiatrist recommended them with a portion cut out to help my metatarsalgia. Unfortunately, they were not a good fit for any of my shoes, especially all the flats I wear. The heel is a hard plastic that renders them unusable with any of your shoes as they will just come right off when you walk! I imagine they might work well if you use them in sneakers and take the original insole out. I do have other inserts that I use like this. So, I'd only try these in sports shoes with lots of room after you take the existing insole out. It was sad to have to toss them after spending this much on them, but such is life.