I used both the spray and the shoe stretcher on a pair of Cole Haan leather shoes that were too tight and it worked just great!  The shoes were tight in the toe area and now they are comfortable.  I was so happy to find this product since these are expensive leather shoes and was kind of desperate to find something that works. After spraying the inside toe area of shoe I left the shoe stretcher in for a couple of days, checked the fit and left it in for one more day. I'm happy with results. The stretcher is made of very durable wood and metal, it should last a long time.