I have this helmet, I believe it is a motorcycle helmet. I've heard that these aren't the best option for downhill longboarding, but full face longboarding helmets are insanely expensive. But wouldn't
Pass Pro Full-Face Helmet W/Two Visors | Performance Helmet for Down – Exodus Longboard Co.
Icaro Grid Black Velvet Long Tail Full Face Downhill Racing Helmet Black – edgeboardshop-clone
Longboarding helmet hi-res stock photography and images - Alamy