I purchased these to stretch out a pair of dress shoes that I received as a gift, but were too tight. I consider this product to have done a very good job for its intended purpose. I placed these inside the shoes and turned the knobs until it was tight and applying pressure. Then I left the shoes alone for about a week and a half before taking the shoe stretchers out. After this, shoes that once were too tight to even put on, now fit comfortably.

I can't say that these stretchers will last for a long time, as some of the parts do not feel very sturdy. But I am very happy with the job they did on my shoes. I think these would probably last for several uses, but I don't see them lasting forever (and I obviously did not expect them to).

All in all, I am very happy with this product and the results it achieved with my shoes.