US$ 29.09
best place to buy helmets motorcycle Amazon Sellers: Best & Powersports 22 vents Material:Carbon Fiber Bugatti Group Vintage 1930s High School
Vintage 1930s High School Football Team Photograph Leather Helmet era Antique | eBay
The helmet should move very little
Bugatti Group
Material:Carbon Fiber
In general, the system does seem to provide slightly better than average air flow, but I think a few small modifications might make the system even more efficient
22 vents