Leatt 2. 5 V24 Blue Motocross Helmet Accidents are a fact of life in our world. To minimize injury, buy the best helmet you can find. to protect the head and brain. Leatt helmets feature turbine technology 360° rotating which sets the standard in this category. These are disks made of energy-absorbing material which allow the head to move slightly inside the helmet during impact reducing rotational direct and bending forces. This technology has two main benefits: it reduces rotational acceleration of the head and brain and absorbs the impact energy of a concussion. Features: Polymer compound shell injection molded three sizes Technology to reduce brain damage Reduces strength Concussion-related Large ventilation ducts for a cool head The lining is washable, breathable and made from moisture-wicking odor-resistant material Designed for high neck mobility The visor has a tear-off feature to reduce impact on the head and neck in the event of an accident 360° Turbine Technology: Reduces Peak Brain Acceleration at Impact Velocities causing concussion up to 30% and reduces peak rotational acceleration of the brain by up to 40% Specifications: Standard: DOT new ECE 22. 06 Weight: DOT ECE from 1070 ± 50 g (2 36 lb) Sizes: XS (53 - 54 cm - 20 ⅞ - 21 ¼ in) S (55 - 56 cm - 21 5⁄8 - 22 in) M (57 - 58 cm - 22 ½ - 22 inches L (59-60 cm - 23 ¼ - 23 5/8 inches) XL (61-62 cm - 24-24 3/8 inches) XXL (63-64 cm - 24 ¾)). - 25 1/5") Contents: 1x Leatt 2 helmet. 5 V24 Cyan for motocross 1x helmet bag