hi My daughter at 16mths has recently discovered the joy of walking (now crawling is no longer acceptable in her eyes it seems) I found a pair of baby crocs in a size 4 which she seems to be coping well in. There is a lot of flexibility in the soles and they have a soft neoprene strap aroumd the ankle and are really light on her feet,as well as being soooo cute also cool on her feet for summer