Chrisposted an image about Kask Protone Helmet on July 13, 2015
In my past experiences with helmets speed has always come with a sacrifice in comfort and ventilation. After three months of use I can now say the Protone has blown that preconceived notion. The most notable difference compared to other aero products is the forehead ventilation and padding system, you can actually feel the air coming in! In addition, I found the multi-axis fit system to be very helpful when customizing contact points.
The only draw back I found was the limited size range, although I fit a small to a medium in most brands and the medium Protone fits me well.