Label says one size fits most, 90-160lbs, but thanks to the lacing and tube-style feet, they will fit nearly everyone! Super-skinny legs may want to avoid these, and larger legs may not be able to wear them all the way up to the thighs.
Our testing found that they fit and flattered 25 inch thighs, easily reaching mid-thigh on a medium inseam, but we would need to switch out the laces for something a bit longer if we wanted to tie them with a bow at the top.
25 inches from toe to top, unstretched. They stay up best with sock glue.
They come unlaced in the package, so be sure to allow a little extra time to lace them up before you wear them the first time. To get the look in the pictures for the Black we had to alternate holes in the lacing process. For the Black w/Red Laces (and for larger legs) we skipped more holes to conserve ribbon.
The ribbon eyelets are sewn on in a way that means they might not mirror perfectly on both sides, so you may need to "cheat" on the number of eyelets between the laces on one crossover lower on the stocking to get everything even on top.