As mountain bike technology has progressed, we've all benefited, and by benefited, we mean that we've all gotten a lot faster. Improved suspension, better tires, and stronger wheels all add up to more speed over rougher terrain. One place that hadn't kept up, until recently, was helmet design, and it's helmets like POC's Trabec that have really changed what we look for in a helmet. It starts with the shape if there's nothing there, how can it protect you The Trabec extends much further down the neck and the sides of your head than other helmets, which means better protection even at the most basic level. POC's aramid structure inside the foam, which holds the foam together in the event of an impact like rebar in concrete, and the super tough polycarbonate shell that disperses impact force across the EPS foam to reduce the amount of impact your dome has to handle, are the helmet equivalent of a seven inch bike you can pedal anywhere.