I went skating last night - biggest rentals were 13, too small for me but I wore them anyway - too tight around my foot, but because they were small I couldn't tighten them over my ankles well enough - anyway, after 3 hours on the ice I took my skates off, and my toes felt like ice to the touch. I was a little worried, because they'd been numb for at lest an hour and a half before then, but with a little warmth feeling and heat returned.