Female 36-37 38-39 40-41 Male 40-41 42-43 44-45 For products with available sizes, we will attach an accurate size chart for you to choose and purchase. The following product details are some explanations of the product situation, which can solve some of your questions and enhance your shopping experience. Due to different shipping batches, there may be slight differences in the outer packaging of certain products. We will provide users with aesthetically pleasing and high-quality outer packaging without affecting product quality. If the specification description does not specify, the quantity of goods in the specification is 1 piece. If the SKU image does not match the product specification description, Please contact customer service promptly and request shipment of the specifications you need. [Product Testing]: Before shipping and packaging, our company will also test each item to ensure that you receive the product without any problems.  If you have any questions, please contact customer service as soon as possible to express your needs. We will reply to your question as soon as possible to ensure that the issue is resolved and avoid any unpleasant incidents. Thank you for choosing our product!!!