Pro Level Trail LifeThe 4Forty Air MIPS features pro-level specs and an all-new shell design with a 3-position visor. Not only does it look the business, but it also boasts functionally significant upgrades such as increased air ventilation, effective sweat management, and better goggle compatibility. With extended hard shell coverage and MIPS integration, you will have increased confidence to shred the trails and make this helmet your everyday ride.What Is MIPSMIPS stands for Multi-directional Impact Protection System. It is a low friction layer that sits between the EPS foam and the helmet liner and allows for a sliding motion in any direction which aims to reduce the transfer of rotational motion to your brain during an impact.