Professional Shoe Stretch is a leather conditioner that stretches boots and shoes while you walk. It is formulated to clean and stretch tight-fitting shoes or boots. This shoe stretch works well on suede, leather, canvas, and linens. Directions: Spray heavily on a portion of the shoe to be stretched. Wear shoes after application to stretch to proper fit. If shoe is still tight after the solution dries, repeat application until you reach a comfortable fit. Always sample first on a hidden portion of the article just to be safe.