My six year old loves these, he wears a 1 in nike, and a 1 in these. The Nikes fit a little closer as I feel nike typically does. These fit more like what I expect a 1 to fit like. So there a little loose, but just growing room as I had expected.My son loves these slip ons, the first morning after receiving them he even put them on straight out if bed, to go to the bathroom. Well be purchasing again and again I feel. They're just too cute on too. we got the brown, it's not a warm reddish brown, more of a grey dirt brown neutral. Perfect, neutral and hides drips, dirt, and splashes. Closed toe but no need for socks is great for mornings we're running behind, or warmer school days.He claims they're as comfy as my Sanuk sandals, with the squishy insole. Yesterday he wore them on a field trip where we walked most of the day and no complaints, except that some bark got in his shoe, and he just shook it out.