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

They fit perfectly under my kids' helmets in cold weather. I have a 2 year old and a 5 year old with smaller heads and ordered a size up for them.

They are great for my kids who bike to school. They fit snug, but not too tight. My kids are 5 and 7 years old, they are average height. It covers their ears well so they don't have to turn their ears to the wind while cycling.

I should have read this more carefully but thought it could be used as a hat which it definitely can't. If you need a balaclava for a young child, this one will fit. My kid is 10 years old and this doesn't even fit as a helmet liner as it's a bit small for his head.

Bought for my 6 year old and 3.5 year old. I have a junior size for 6 years and a kids size for 3.5 years. The kid size didn't even cover his ears and kept riding up so I had to buy another junior size to fit him (although my kids both have big heads but not THAT big). Perfect for wearing under bike helmets on cold days.

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.

Bought this for my 6 and 3.5 year olds. I have a junior size for 6 years and a kids size for 3.5 years. The kid size didn't even cover his ears and kept riding up so I had to buy another junior size to fit him (although my kids both have big heads but not THAT big). Perfect for wearing under bike helmets on cold days.

Great for my 3 year old. We live in Colorado and he enjoys riding his bike and scooter, even (or especially!) on snow and ice. We tried ski helmet style headphones but he said they sounded fun. It's very thin, but at least keeps you a little warmer. We really had to increase the size of the helmet when he wears that, otherwise the helmet would sit too high.

Bought a 4-6 size 8 for our 6.5 year old who bikes to school every day. It fits more of a large Yamaka to give you an idea and doesn't cover your ears at all which was the only reason I bought it. I would say size 3-4 and maybe 5. It's quite thin and doesn't look like my Gore Windstopper at all, but the kids' sizes I've been able to find don't. 8-10-12 for a 6 year old and let you know when it arrives.