10 Best Bike Helmets (For Every Kind of Ride)

WINDCUTTER

Designed with a profile similar to aero time trial helmets (but without the tail), Giro’s Air Attack boasts the lowest aerodynamic drag of any road helmet tested, giving riders what Giro refers to as “free speed.” And rightly so—it accompanied several Olympic medals in August. It also offers exceptional cooling power with the company’s Roc Loc Air system, which suspends the helmet three millimeters above the head to create a vents-to-exhaust-ports air flow. ($200, giro.com)