Purchased these for my 3 year old son because he is growing out of his size 9 boots and now likes Spiderman.  The difference between size 9 and size 10 seems to be a huge difference which will take him at least 1 year to grow into.  I'll be purchasing a pair from the local store in the meantime.  So sad because he was really excited and will likely like a different super hero next year.