Size-Extra Large Rev X-3 MIT (Multiple Inclusion Technology)\: The MIT shell is Kevlar, Carbon Fiber and Fiberglass. M2Rs exclusive technology leaves only the resin needed for shell integrity. The layering technology is also unique due to the pattern in which the fibers are laid to absorb impacts and resist penetration. The MIT process along with the fiber pattern allows M2R to make one of the lightest and most technology advanced helmets in the world. During an accident the MIT shell absorbs and disperses the energy of the impact over a greater surface area. Painting and Finishing\: The paint process is all done by hand with the highest quality paints. This is done to guarantee that all M2R helmets produced have long term durability and a look that is unique to M2R. Meets or exceeds DOT Standards. Snell M2005 Certified Dual Density. M2R Helmet Sizing Chart