Amazon has a great bit of Gender going on if you're trying to find boots
You might think you pick Men's or Women's and a size, but no!
The sizes themselves are gendered, you have to pick size Mens-10 or size Womens-12, which is separate from the gender option

width is gendered too.
You can't get a boot that's for Women in Womens-12 in XX-wide, you have to get:
Gender: Women
Size: Womens-12
Width: Womens-XX-wide

Feet are clearly the most gendered part of the body

@foone My family have worked in the shoe businesses for 3 generations so let me share a fun but probably irrelevant fact:

Foot width is tied to your weight (lose weight it gets narrower a bit cause less pressure pushing on it), and US shoe widths are based around the *average weight* for a given shoe size and gender

@foone for some reason my brain went to "gender but as in cable connector" which I can't stop thinking about now and so I guess feet are the male connector and shoes are the female. Is a mannequin foot actually just a "male shoe"? Are socks just a very short cable connecting your foot to the shoe?
@Plan_A_to_Y "Are socks just a very short cable connecting your foot to the shoe?" is one of the worst things I've read in a long while, thank you!