Longboarding Resources & Q/AGet or give friendly, patient answers to, "Which board should I get?", "How do I stop?" or "What's wedging and how do I do it?"
I can weigh mine in the morning but between a Charly No-Limit and a Bell Drop with a similar thickness faceshield, both helmets sized medium, the weight difference feels pretty negligible.
4 pounds is way heavy... These things aren't. I'm gonna say the 1000 gram estimate is about right.