INCREASE COMFORT INSTANTLY: Stop squeezing your feet into shoes that dont fit! Increase the comfort of your shoes super instantly with this spray. Made with special technology to instantly soften your shoes to provide ultimate comfort. After simply spraying this inside and outside your shoes, the material will soften and shape to your foot when you walk. REDUCE BLISTERS AND CALLUSES: This shoe stretching spray reduces your risk to blisters and calluses by stretching the material of your shoes to provide a custom-fit. It rapidly expands tight areas on your shoes without slightly damaging the leather. Help get rid of foot pain and painful blisters caused by tight fitting shoes. SAFE, FAST & EFFECTIVE: This shoe stretcher is safe to use on leather and suede shoes and boots. Spray this inside and outside your shoes to increase elasticity without weakening the material. Can be used with wood shoe tree or wooden shoe stretcher.