Alpinestars Nucleon Flex Pro Knee Protector motorcycle helmet Constructed from an advanced 600D

Constructed from an advanced 600D poly-fabric for durability and abrasion resistance

Bomber rib collar and stretch panels on scapulae area and arm entry for enhanced rider comfort

and don't be burdened with carrying a clumsy water bottle

Soft foam surrounds the ankles and boot collar for comfort and shock-absorbing performance

• Anatomically engineered for an optimized ergonomic fit

Alpinestars Nucleon Flex Pro Knee Protector motorcycle helmet Constructed from an advanced 600DFeatures Ergonomic design provides high levels of movement Open design structure ensures high levels of airflow and ventilation Slim design gives a low protector profile, meaning the protection appears discreet in the garment off the bike Adaptive design means the protector molds to the rider's body shape for enhanced levels of comfort