My husband bought this for my son but it didn't fit.  We bought it from a store on vacation and now we can’t return.  Brand new in box. 

From the website:

Protection

• ·       Hybrid shell construction blends a durable exterior with a lightweight in-molded shell for durability where you need it most while keeping the helmet light
• ·       Zonal KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection
• ·       Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head
• ·       Select colorways offered without Mips® system
• ·       Certification: ASTM F 2040, CE EN 1077:2007CLASS B

Fit / Integration

• ·       Designed for ultimate integration with Smith goggles for maximum comfort and venting
• ·       AirEvac ventilation system integrates with Smith goggles for fog-free lenses
• ·       VaporFit Snow dial adjustment system offers270-degree fit adjustment with the turn of a dial
• ·       Ionic+® antimicrobial lining offers sweat-activated odor control

Features

• ·       Regulator climate control allows easy, one-handed vent adjustment
• ·       20 vents
• ·       Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible
• ·       Aleck® audio systems compatible
• ·       Weight (Size M, Mips®): 19 oz / 550 g