Love these bubble comfy sneakers for toddlers! My son has 3 pairs! Compared to other brands, Adidas has always ran TTS or a little bigger, but these Bubblecomfy do seem to run a taaaad bit small, perhaps almost 1/2 size small. (Hard to know when child is too young to speak! :$) Regardless, the level of EASE and COMFORT keeps me coming back! Will probably buy for every shoe size my child grows into, they are THAT GOOD. AND SWEET LOOKIN! (Everyone compliments! )