Alpinestars Ajohousut AST-1 v2 Drystar Musta

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.



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.

• According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply to this product:

• 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).