- Size: 39-46 • Maintain the shape of your shoes: say goodbye to unsightly wrinkles and deformations. Our shoe stretchers maintain the natural shape of your shoes, prevent the formation of creases, and ensure they always look perfect with each use. • Durable material: the stretchers are made of high-quality plastic and durable carbon steel springs. They are safe, eco-friendly, lightweight, and ideal for prolonged use. • Perfect fit: this set of plastic stretchers has been carefully designed to provide optimal support and prevent deformations. They offer a comfortable fit for shoe sizes 39 to 46. • Easy to use: the stretchers are easily inserted into the shoes and adjusted with a spiral spring. This ensures that the stretcher stays firmly in place, gently stretching the shoe to maintain its shape. • Wide application: the stretchers can maintain the shape of sneakers, boots, leather shoes, casual footwear, canvas shoes, loafers, and almost any other type of shoe you use for work or special occasions. (Note: They are not suitable for high boots).