I never count on length while baking. Every skate I've run that gamble on, I curled my toes for the next year. The solid plastic toe cup and carbon fiber heel (whatever they call it) at the rear of the skates makes the front and back non-moldable. Now - the liner/padding within the heel does form some, but if you are toe curling, thats not going to stop. Your toenail grazing the front ever so slightly, maybe, but the toe actually banging up against the front... I'd go a half size up. -Jim