The vent cap is also designed to break away from the chin bar in the event of impact

65% polyester

Less drag increases horsepower

and versatility

Alpinestars - A-Impact Plasma Pro Knee Protector K-Type-Track Main Axles The vent cap is alsoOffering protection without compromising flexibility while pedaling, the A Impact PLASMA PRO Knee Protectors are lightweight, flexible, and comfortable knee protectors. Featuring Alpinestars bio based, Nucleon PLASMA technology the protectors are also built with high stretch, breathable fabric for maximum comfort and flexibility. Ideal protection for those long rides on trails with diverse terrain. Key Features: Rear opening for additional ventilation