So we bought four packs of these socks in different designs for our 2 and 4 year olds. We just got the size for a 4 year old and they fit great. One of our daughters is texture sensitive and won't wear another pair of wool socks we bought for the winter (they're too rough or something). Although she loves wearing them. They're not all wool so won't dry out as quickly if they get wet, but they're nice and thick to keep your feet warm. They also stretch a bit and don't clump, so our picky daughter has no complaints.
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