<s>[INST] What is the average foot size? [/INST] It varies depending on context:
* The average male foot length in Europe and North America is 270mm
* The average male foot length in Asia is 255mm
* The average female foot length in Europe and North America is 245mm
* The average female foot length in Asia is 235mm
* The average male foot width and heel width in North America is `0.25*foot_length` and `0.21*foot_length` respectively.
* The average female foot width and heel width in North America is `0.26*foot_length` and `0.23*foot_length` respectively.

For more interesting foot statistics, you can read the source paper: "Analysis of 1.2 million foot scans from North America, Europe and Asia"</s>\ <s>[INST] Great, thank you so much! Can you suggest any shoe stores that have positive feedback on their accuracy of shoe size? [/INST] 