Both of my girls love these socks. 4 and 5 years old, both wear size 12 shoes. They argue about when they should be taken off to wash. I need more to stock up for a laundry day.
Pros
Our girls don't take them off! Their toes are warm and comfy on our wooden floors and they love wearing them to bed.
Cons
Can be difficult to clean, especially after prolonged use