Review on XFMT Full Face Motorcycle Helmet Flip Up Adult ATV Dirt Bike Carbon Fiber S (Large, White Pink Butterfly) by Chris Riley

I purchased this for my four year old to wear while riding on an ATV. She is of fairly average size weighing 40 pounds. The small size fit her very nicely with a little bit of room to grow. It is heavily padded around the head. I had my 9 year old try this on and though he was able to fit his head in it, he said it was squeezing his head a little too much. I would say, in general, size small fits 3-8 year olds.