The ATLAS 4.0 Thicker headliner is meant to provide a tighter fit for your ATLAS 4.0 helmet. The thicker headliner is not intended to fully downsize your helmet completely but instead provide a middle ground between sizes.
If your helmet fit is slightly too loose then please select the exact size that correlates to your helmet - If your helmet is a medium then pick the medium headliner.
The ATLAS 4.0 Headliner features anti-roll-off protection in the form of an enclosed foam bar at the rear of the headliner, for the new ECE 22.06 safety certification. The rest of the headliner is constructed from premium, durable soft fabrics that will provide you with great protection and comfort. Ruroc has teamed up with RHEON™ Technology to incorporate RHEON™ into the ATLAS 4.0 headliner. RHEON™ works as a reactive polymer to help dissipate energy away from your brain in the event of a collision, by acting as a non-Newtonian fluid. This means it is soft and flexible when you move it slowly but as soon as it gets impacted by a linear or rotational force it hardens up absorbing energy from the impact.
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How to measure
With a fabric measuring tape, wrap it around your head just above your eyebrows and ears.
Pull the tape comfortably tight. Take the measurement.
Repeat once more and go with the largest reading.
Our motorcycle and snow helmet fit is an intermediate oval.
If the fit is not quite right our return process is simple. 14 days to exchange, picked up from home. See our returns page for more details.