I like these in theory, as I was looking for warm slippers that would stay on and take the place of socks. However, the plush lining drastically reduces foot and ankle space. My daughter is beautiful but rather large (97 percentile), with chunky feet and ankles. I bought the small size, which were stretched so far around the ankles that the shoe was gaping open and the elastic cut into her skin. I tried the medium size also, but they were still pretty tight on the ankles and further were comically long. I think the small size might be too tight even for average sized babies. Picture normal size robeez lined with cotton balls and then trying to stuff your baby's foot in too. They should have made the shell bigger to compensate. Oh well, back to socks.