The K2 Phase Pro is the go to helmet if you needing low profile and lightweight, as well as being well-ventilated and stylish. Its low profile Hard-Shell construction with an EPS foam liner sets the standard for what is a tough and reliable helmet. What is also 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 and unique to K2. The Active Matrix Venting is a great feature, and allows the rider to regulate the airflow of the helmet with a flick of the switch. The Phase Pro features K2’s Baseline Audio System, turning your helmet into a personal sound system via connection to your phone or MP3 player with external volume control and start/stop button.