The wool rib socks of mp denmark are super soft, they not only really stay where they are supposed to! You will love them, with an envelope cuff at the end …. made of 80% Wool in certified oeko tex quality.
From the danish brand mp Denmark
Sizes
15/16 = 0-6 months
17/18 = 6-12 months
19/21 = 1-2 years
22/24 = 18-24 months
25/28 = 3-4 years