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Alpinestars AST-1 V2 WP Pants


An excellent all-weather textile pant with a fixed waterproof membrane and class-leading internal protection incorporated into its multi-panel chassis, the AST-1 v2 Waterproof pants are equipped with pre-curved legs and an articulated knee design for enhanced comfort and durability.


  • Multi-material main shell construction for the optimum blend of durability protection and light weight
  • Nucleon Flex Plus knee and hip protectors for protection against impacts
  • Internal knee compartment allows adjustments of protection to fit various leg lengths
  • Fixed waterproof and breathable membrane for effective all-weather performance
  • Ventilation opening for high levels of cooling airflow
  • Pre-curved leg construction for enhanced fit and comfort in the riding position
  • Hand pockets for real-world practicality
  • Hips compartments can be upgraded to incorporate Alpinestars Bio-Flex hip protectors
  • Reflective details
  • Hook and loop waist adjustments belt for a precise fit
  • Waist connection zipper for secure integration with Alpinestars riding jacket
  • Premium YKK zippers for durability


  • CE Category II PPE Regulation (EU) prEN 17092 – A class.
  • CE Level 1 EN1621-1:2012 Alpinestars Nucleon Flex Plus knee and Bio-Flex hip protectors. (Bio-Flex hip protectors are available as an accessory upgrade).

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