So I have picked up a used Chariot off craigslist a few weeks ago and tried putting the little one in it the other day. I am using a helmet we picked up at the local Performance http://www.performancebike.com/bikes...400150__400150 and it fits him. He's a few weeks away from being a year old and his head is 18.25". My issue is that when he has the helmet on and it's snug, the back of the helmet sticks out back, pushing it against the netting of the trailer, which itself is pretty snug, making his head pushed forward. I am curious if anyone else has had this issue and what the solution might be. I called Chariot and they were not of any help.