Bontrager's Circuit is a lightweight road helmet that features massive vents for maximum airflow. It features their one-hand-adjustable Headmaster fit system, plus it has an in-mold strap retention system with FlatLock strap adjusters for a superb fit and serious safety. The premium fit pads not only give you a custom feel, they also help keep your head dry on those hot rides.
- Small = 51-57cm
- Medium = 54-60cm
- Large = 58-63cm
|Black/Vis Yellow / Large||768682343180||433636||HEL37862682N|
|Charcoal/Black / Medium||768682342985||433626||HEL41987696K|
|Visibility Yellow / Medium||601479339556||521322||HEL48342393C|
|White/Silver / Medium||768682343043||433629||HEL39316339R|