Your "true" shoe size is the size measurement you get when you measure your foot using a Brannock device! You need to know this size in order to find out which shoe size is right for you! Once you know your "true size", you will be able to find out what size you need for specific NB shoes in my guides!
You can easily utilize a Brannock Device from any store that sells shoes!
Follow the instructions on the device.
The measurement you get from the device is your "true size!"
Keep in mind your width measurement as well, just in case the shoe you want also comes in wider or narrower widths!