Gave my son horrible blisters... I was starting to think I bought a size too small, but I know that's not the case.  He always complained about them being too tight to put on.  I was hoping they sold these in wides, but they don't.  I really like the concept of these shoes..  They actually work great for my 2 year old daughter.  But these are a huge disappointment... he has huge blisters/open wounds on both feet, both sides.  :(