They got 4 points for warmth because they're not designed for warmth, they're regular socks. My 3 year old daughter loves them, they are easy to put on too, she loves them and they stay.
Pros
These fit my daughter well. They're soft but thick enough to be durable, and they're snug but not too tight.
Cons
Socks may not be appropriate for children with wider feet or thicker ankles.