Snowboard/ski helmet Smith Altus Mips * certification: ASTM F 2040, CE EN 1077:2007 CLASS B * MIPS (Multi-Directional Impact Protection System) technology: in the event of an impact at an angle, the EPS shell of the helmet rotates a few millimeters after the MIPS layer, and thus protects the head and brain from a violent rotational jerk. Although this movement is only on the order of a few millimeters, the result is that MIPS significantly reduces the amount of rotational force that would otherwise be transmitted to the brain * The IN-MOLD® system is a technological process in which the shell and braces enclosed in the mold pressure injects EPS polystyrene foam. Their connection will reinforce the area of ventilation holes and ribs. The result is a compact, one-piece, lightweight, safe and highly durable helmet * Zonal Koroyd® for lightweight, energy-absorbing and ventilated impact protection * AirEvac™ ventilation system integrates with Smith goggles for fog-free lenses * VaporFit Snow™ dial adjustment system offers adjustments 270 degrees by rotating the wheel * removable earcups compatible with Aleck™ audio systems * designed for maximum integration with Smith goggles for maximum comfort and ventilation * easy one-handed ventilation adjustment * XT2® antimicrobial lining offers sweat-activated odor control * 10 vents * fabric included helmet cover * circumference for size M (55-59cm), L (59-63cm), XL (63-67cm) * Smith helmets * Smith SNB helmets * Smith snowboard helmet, Smith ski helmet * helmet, branded helmet