The Push Med Ankle Brace Aequi Flex should conform to the shape of your ankle comfortable. It is returnable, please be sure to carefully read the return policy, which can be found under Ordering Info: Help + Policies in the upper right corner of the home page.
To determine the size needed you should first measure around the ankle down to the heel diagonally. A picture is shown below the product pictures of the size chart and measuring diagram. Be sure to select right or left and the corresponding size according to your measurement.