The Head Sensor Ski Helmet provides everything any skier could ever really ask for from a helmet! With standard features like the 2D size fit and height adjustable ear pads, this product has been custom-built for performance and reliability. In fact, these claims are backed up by the ASTM F1447 certification, an industry standard. With a ventilated Polycarbonate shell, this helmet remains lightweight, comfortable, and provides plenty of air circulation. Get the advantage by owning the Sensor!