ribbed openings marled pattern size 0-6m = 19-27 height, 7-17 lbs. weight size 6-12m = 27-29 height, 17-22 lbs. weight size 12-24m = 29-33 height; 22-30 lbs. weight size 2t-3t, height 33-39, weight 30-36 lbs. weight size 4t-5t = 39-45 height36-46 lbs. weightmachine wash according to the care instruction label . Best Holiday gift for toddler Toddlers , perfect Socks for Christmas!