Boys Winter Hats Big Kids Nylon Russian/Aviator Winter Earflap Cap 65% Cotton, 35% Polyester Waterproof fabric,Warm Faux Fur inside Elastic Slide Lock Chin Strap 1-2years Best Fit From 19.5"-20" Head Circumference,2-4years Best Fit From 20"-21" Head Circumference,4-6years Best Fit From 21"-21.6" Head Circumference Typically Fits 1-6 Years