29+ Thousand Helmet Size Chart Images. 7 5 best recreational helmet brands. The helmet size of your child will depend on the head measurement of your child.
I love my thousand helmet.
The difference is in how the helmet fits over the rider's head. Small weights 410 grams, medium 450 grams, and large 490. I love my thousand helmet. Take a tape measure and measure the circumference around the widest part of your child's head, usually 5 youth & kids helmet size chart.