Review on EMPIRELION Kids Thermal Helmet Liner: Ultra-Light Teens Skull Cap with Ears Cover - Perfect Beanie for Child Running Hats (Boy & Girl) by Andre Belitz

Purchased size 4-6-8 for our 6.5 year old who bikes to school every day. It looks more like an oversized Yamaka to give you a mental picture and doesn't cover the ears at all which was the only reason to buy it. It's perfect for my almost 4 year old. I'd say a size larger than a 3-4 and maybe a 5. It's quite thin and doesn't look like my Gore Windstopper at all, but they don't do it in the kid sizes I could find. I'll try 8-10-12 for 6 years and let you know when it hits.