This is the female version of the Rival, one of the top helmets from K2: & is the ultimate in lightweight & simplistic design. Its low profile In-Mold construction with EPS liner is premium for ultra-lighweight performance helmets. It has passive channel venting, which directs the air-flow between your head & the helmet, keeping it cool. What's great about K2 helmets is their Dialed fit system, which creates a custom-fitting helmet with the twist of a dial. This liner is also removable, so you can wash it, which is a great feature & unique to K2.