Giro Encore 2 2009 Snow Helmet CSC-certified multi-sport helmet with high-impact hardshell construction EPS foam liner absorbs more pound-for-pound impact energy than other materials 13 super-cool vents pull cool, fresh air into helmet and push heat and stale air out Fit Kit pads system allows you to dial in your fit using different thickness pads Available in small (52 to 55.5 cm), medium (55.5 to 59 cm), and large (59 to 62.5 cm)