These fit just right for my women's size 10 feet, so I'm glad I bought XL.  Feels like walking barefoot without any padding. But the grippiness only covers about 1/2 of the sole and does not extend to the heel, so I'm reluctant to wear them on wood floors.  Disappointed about this.  (Amazon does not accept for return if you do not like the style.) Another reviewer suggests the men's version does include more grip.