1. Function: Help prevent the pain of blisters caused by rubbing and avoid wearing shoes that hurt your feet. Can transform tight boots into more comfortable and well - fitting ones. (Suitable for ordinary boots) 2. Durability: Made of tough polyurethane plastic and steel shafts, these shoe stretchers are more durable compared to wooden ones and can last for many years. 3. Metal handle: The electroplated metal handle is rust - resistant, smooth, and strong. It is easy to use and has a relatively long service life. 4. Free shims: A set of shims is provided as a giveaway, which can be used to further stretch the upper of the boots. This allows for stretching a small area of the boots and precisely addressing the foot - rubbing problem. 5. Packed in pairs: The package comes with a pair of shoe stretchers. Simply insert them into the boots and turn the knob clockwise to start stretching. Leave the shoe stretchers in the boots overnight or for 24 - 48 hours. The longer they are left in, the more the shoes will be stretched. 6. About shipping: All products will be shipped within 3 business days after receiving the payment. In most cases, you will receive the products within 8 - 12 days. The specific delivery time depends on the actual situation. If you have any questions, please feel free to contact us. During the shopping process, if you have any questions, please feel free to consult us. We will try to reply to you within 24 hours. Have a pleasant shopping! Thank you for your cooperation. We will strive to make you satisfied.