Trek's Circuit WSD is a lightweight road helmet that features 21 vents for maximum airflow. It features Trek's QuickFit strap and ZipTite 2 Elite fit system, plus it has an InMolded strap retention system for a superb fit and top-notch safety. The wicking fit pads not only give you a custom-fit feel, it also helps keep your head dry on those hot rides.
|Silver/Blue / Small (52-56 cm)||745889490909||403596|
|Silver/Blue / Medium (56-60 cm)||745889490923||403597|
|White / Small (52-56 cm)||745889504422||403844|
|White / Medium (56-60 cm)||745889504446||403845|