Sorry. You can find the " Size Chart " on the product page between the color and Qty. About the size, you can find all the details about the sizes of each item on every product page by click the ""size chart ""/ "" size guide "". Please take our size chart as the standard reference and choose a suitable size base on your measurement, not the usual size you ordered. If you have any doubts about the product or your order, please feel free to contact us and give us more details. https://www.newchic.com/Contact-Us-hc10.html We will do the best to help you. Thank you.