Features of the Bern Watts 2.0 MIPS Helmet 11 vents with increased air flow Compatible with click-mount light Lightweight Integrated brim Lay flat strap dividers Compression molded pads Light and durable Dual shell Snowsport knit compatible Mips is a brain protection system Rotational motion can cause brain injuries Low friction layer allows a sliding movement of 10-15mm in All directions, reducing rotational motion to the brain during impact