The socks look great and absolutely fit for purpose. My baby takes place everywhere high at the moment and slips the socks off a millimeter. However, they do not sit quite as good on foot, since the material is very elastic and turn the socks also greater. According to mask my baby at the moment Shoe size 17. I bought size 15-16 and that's a little too big. If one turns the covenant, it keeps better, but I have the socks still pull up repeatedly. 4 stars because it is still the best anti-slip socks, I know. Small drawback: The socks have a strong tendency to pilling and therefore see in a short time very needed from.