The XTM Trooper sock 60% Merino, 20% Nylon, 15% Polyester, 5% Elastane. It's a lightweight sock with a seamless toe offering great comfort for the kids .
The Heater sock is the ultimate for socks for snowy cold conditions.
I have 2 kids a 4 year old and she is in the size 5-8 and a 7 year old and she is in the 9-12.