Trek's Circuit 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.
|Option||Barcode||Manufacturer's Part Number||Store SKU|
|Black / Small (52-56 cm)||745889504309||403838||HEL27491468K|