How to Fit Your Helmet
Step 1 — Size: Measure your head to find your size. Try on several helmets in your size until one feels right. Now put the helmet level on your head and adjust the sizing pads or fit ring until the helmet is snug.
Step 2 — Position: The helmet should sit level on your head and low on your forehead— one or two finger-widths above your eyebrow
Step 3 — Side Straps: Adjust the slider on both straps to form a “V” shape under, and slightly in front of, the ears. Lock the slider if possible.
Step 4 — Buckles: Center the left buckle under the chin. On most helmets, the straps can be pulled from the back of the helmet to lengthen or shorten the chin straps. This task is easier if you take the helmet off to make these adjustments.
Step 5 — Chin Strap: Buckle your chin strap. Tighten the strap until it is snug, so that no more than one or two fingers fit under the strap.