Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great product- will save your shoes

Can't say enough good about this product. I stepped in some kind of corrosive liquid at a job site, which took out a chunk of the rubber sole of one of my shoes. Used this product to fill it in, sprinkled salt on it one hour into drying time (per instructions), and I now have a perfectly usable shoe, waterproof and with good traction (due to the salt). Saved my favorite pair of shoes! It really does what the maker says it will.