Alpinestars ST-1 Waterproof Pants

All-Weather Performance with Ergonomic Mobility

The Alpinestars ST-1 Waterproof Pants are designed for adventure touring and commuting riders who require reliable wet-weather protection without sacrificing comfort. Featuring a streamlined construction and a fixed waterproof membrane, these pants utilise a 600D poly-fabric chassis to provide a durable yet modern fit. The inclusion of a detachable thermal liner ensures these pants remain a versatile choice for year-round riding, from cold mornings to rainy afternoons.

Key Features

• Fixed Waterproof Liner: Provides guaranteed performance and protection against the elements in wet conditions.
• Detachable Thermal Liner: An 80-gramme insulated layer that can be easily removed or zipped in to suit temperature fluctuations.
• Nucleon Flex Plus Armour: CE Level 1 knee protectors that are highly flexible and breathable for impact protection with a slim profile.
• Customisable Protection: Features a three-tiered colour-coded inner pocket system to allow precise positioning of the knee armour.
• Reinforced Construction: Poly ripstop fabric panels on the inner legs offer enhanced abrasion resistance in high-wear areas.
• Active Ergonomic Fit: Pre-curved legs and 3D ergonomic knees provide excellent freedom of movement and reduced rider fatigue.
• Cargo Storage: Zippered cargo pockets offer generous and secure storage capacity for everyday practicality on long tours.
• Comfort Crotch Construction: Engineered to improve mobility and ensure premium comfort while seated on the motorcycle.

Protection and Build Quality

The ST-1 Waterproof Pants are constructed from a robust 600D poly-fabric blend, specifically chosen for its balance of weight and durability. Safety is a primary focus, with the garment achieving a full CE certification under the EN 17092-4:2020 standard. The integration of Nucleon Flex Plus armour ensures that impact protection is discrete and comfortable, while the ripstop reinforcements provide an extra layer of defence against mechanical stress and abrasion during touring use.

Technical Specifications

• Chassis Material: 600D poly-fabric with poly ripstop reinforcements
• Waterproofing: Fixed waterproof membrane
• Thermal Insulation: Removable 80g thermal liner
• Knee Protection: CE Level 1 Nucleon Flex Plus
• Certification: Category II EN 17092-4:2020 – A Class
• Fit Type: Ergonomic active fit with pre-curved legs
• Pocket Configuration: Zippered cargo pockets

Who is it for?

These pants are ideal for adventure touring riders and daily commuters seeking a minimalistic, stylish, and functional pair of waterproof trousers. They are designed for those who ride through all seasons and require gear that adapts to varying weather conditions.