The Overdrive is a performance mountain bike helmet with superior ventilation, removable visor and the TS+ dial fit retention system (use the adjustment dial at the back to customize the fit of your helmet). 21 large vents help manage heat on extra hot days, adding comfort to protection. The Overdrive is perfect for mountain bikers looking for a high performance helmet that stays comfortable and secure all day.
|Fit System||TS+ dial fit retention system with height adjustable occipital basket.|
|Ventilation||21 vent holes with deep internal air channels|
HOW TO MEASURE YOUR HELMET SIZE
Use a soft tape measure to measure the circumference (around) your head.
If you don't have a soft tape measure a piece of string or yarn is a good substitute, make sure to have a ruler or tape measure handy that is at least 24 inches or 2 ft. long.
Measure your head just above your eyebrows, make sure the tape or string is level from front to back.
Compare the measurement to the chart, if using a string check the length of the string with your ruler or tape measure.
EXAMPLE: Results showed a 56cm head circumference (around your head). Which makes for a 7 Hat Size.