Shell - Secret of StrengthHelps show riders hidden details of Arai helmets. On the outside you can find information about how the shells are tested, their compositions, and the craftsmanship that goes into them. Includes a QR code that links to a video of the shell penetration test used by Snell and D. O. T.. You can also find a QR code linking to a test of the shells durability, demonstrating the extreme strength and flexibility of an open face shell, without the added