Dial in the right fit with the Trek Interval II Sport and you?ll be blessed with a light and comfortable bicycle helmet that's as stylish looking as it is protective. An updated version of the respected Interval helmet, the Interval II Sport offers a stronger ZipTite fit system that can be easily adjusted to maintain a comfortable fit. The internal reinforcement on the rear shell has been updated, as well as the new QuickFit strap system. The 21 sculpted vents are large enough to ensure plenty of airflow on those sweltering rides while not compromising on overall safety. The washable wicking mesh and anti-microbial fit pads make this bicycle helmet easy to keep clean and fresh for each ride. The Trek Interval II Sport is a neatly designed helmet that features a removable snap-on visor and is available in a selection of colors as well as a women's specific design.

Pros: Top quality, race-proven helmet; 21 vents.
Cons: Expensive.