Alpinestars Nucleon Flex Pro Knee Protector motorcycle helmet Soft foam surrounds the ankles

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

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

and cheek thickness for maximum comfort

The tip has a special design with traction grooves for greater grip

• Anatomically engineered for an optimized ergonomic fit

Alpinestars Nucleon Flex Pro Knee Protector motorcycle helmet Soft foam surrounds the anklesFeatures 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