Cannondale's Radius is a versatile helmet that is great for riding trails and roads. Its durable, one-piece polycarbonate outer shell is married to a dual-density EPS foam for excellent protection with a sleek, integrated design. Sporting 22 vents, the Radius sports exceptional airflow to keep you comfortable. The retention system offers EVA foam padding and soft-touch straps with cam-lock dividers that let you dial in the perfect fit. You also get a removable visor, allowing you to easily pop it on/off depending on the conditions