I was worried they wouldn't work as my big toe is a bti apart from my other toes more so than usual and was releved as they seem to adapt to mos foot sizes. my big to is longer than my other toes by a good bit to (genetics some people have the next toe almso tthe same length) the shoe seems to acomidate that as well i have some extra space in there but it doesn't hurt the function of the shoe. makes running better esp trail running.hiking