Not only is it ultra-light, it is also triple certified and meets all alpine skiing and mountaineering standards. The Summit offers a low profile and an internal headlamp router. This keeps everything in place. 33 vents ensure perfect climate control during the climb, while zonal Koroyd and the MIPS system provide protection in the event of a fall. To be prepared for any weather, the Summit is compatible with beanies and visors, and of course your goggles. The retractable Smith BOA 360 adjustment system also allows precise sizing and saves space when you stow the helmet in your backpack. MIPS Multi-Directional Impact Protection System Inside the Summit is the MIPS Brain Protection System (BPS). It diverts dangerous forces that would otherwise hit your brain with full force, primarily in the case of impacts with a lot of rotational speed. Koroyd Koroyd offers you superior shock absorption and improved ventilation. Smith uses cylinders in the crumple zones of this helmet, which absorb energy more efficiently by applying an even load. Koroyd has less volume than other materials used in helmet construction, so it is lighter and offers you more comfort.