Whether your finish line is on the race course or your front door, Trek Circuit WaveCel delivers the performance, comfort and tech to be your go-to helmet. It's equipped with features that any rider will appreciate, like WaveCel technology, a BOA® Fit System and Blendr mount systems. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Trek-exclusive technology disrupts the safety standards that the industry has accepted for over 30 years. WaveCel behaves like a network of hundreds of interconnected shock absorbers connecting your head and the outer shell of the helmet. It distributes the impact energy through its network of cells. It absorbs impact forces like the crumple zone of a car. It diverts rotational forces by flexing and gliding. Specifications Size S M L Circumference 51-57 cm 54-60 cm 58-63 cm Fit system BOA® BOA® BOA® Pad material Moisture wicking pads Moisture wicking pads Moisture wicking pads Buckle type Standard buckle Standard buckle Standard buckle Includes Crash Replacement Guarantee Crash Replacement Guarantee Crash Replacement Guarantee
