Verified Buyer Reviewed by Carrie from Gig Harbor, WA on Thursday, September 29, 2016
We got this for our 3 yr old. The size small fits well with the largest set of foam inserts and the straps tightened all of the way. We should be able to get good use out of it before he out grows it. I tried it on his older brother (he almost 5) and it was a good fit with out any foam inserts. They have average sized heads.