My 2 year old son (almost 3) loooves his slippers, though they do seem to run small. I'd recommend sizing up at least a size or 2. We purchased in 2T/3T, but 4T/5T probably would have been a wiser investment.
I got this slippers after checking every retail store & by far target carries the nicest ones at a better price. This are so cute my 17 month baby loved them,what you need to know is the size 2t-3t berly fits him and he wears size 5-6 in shoes