Based on the reviews I figured out the size and bought the Small for my 3T daughter who has a size 8 shoe with a foot measurement of just under 6 inches. They fit her EXACTLY so I will wash them in cold water and hang to dry. Consider going 2x to M next time if they become favorites and miss them in the cart, but they probably only work for winter/rain boots and for lounging (thick padding). Her 8.5 Vans and 7.5 Reima High Tops (both) have leeway, so S now works well with what she calls her winter kickers + boots, and will carry us through spring. Great value for quality wool, next day delivery in cold weather and a decent piece for a north east winter. Warm and absorbent! Nice box too.
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