The product is heavy and nicely constructed, but there are some problems. Given my shoe size, the back part should have fit easily into the heel of my shoes, it did not, I had to use it in the upright position in all my shoes. Also, I feel the stretcher does not open wide enough, it did save a couple of pairs of shoes for me, but they would be more comfortable if I could have stretched them wider.

I had to use it in my shoes for 10 days, giving it a small turn every morning. Also used alcohol inside and outside of shoes to help the leather stretch. Do NOT use on cheap shoes that use glue, it will pull them apart.