Shopping online may also open up a plethora of options for you. While ordering boots from an online store, measure your calf at the widest point and then use the guide that the store will have. If you have a problem wherein your measurement lies somewhere between two shoe sizes, then order for the one that is larger. It may also be a good idea to order for shoes that have panels which can be expanded by a shoemaker. This is important because without panels, the shoes can be expanded but the process is quite expensive.