Alpinestars · Pants · Adventure
The Alpinestars ST-1 Waterproof Pants are adventure riding pants built for riders who want dependable coverage with a clean, functional design. They use a streamlined, ergonomic active fit with pre-curved legs and 3D-shaped knees to stay comfortable in the riding position during long days on the bike.
For changing conditions, the pants include a fixed waterproof liner to help block wind and rain, plus a detachable 80g thermal liner that zips in to add warmth when temperatures drop. Practical storage and fit adjusters round out the package for everyday utility on adventure touring routes.
Comfort
An ergonomic active fit focuses on comfort and mobility, with pre-curved legs, 3D ergonomic knee shaping, and a comfortable crotch construction designed to follow the riding position. The result is a streamlined feel that supports flexibility for standing, sitting, and shifting body position on adventure rides.
Construction
A fixed waterproof liner is built in to help handle unpredictable weather and reduce wind and rain exposure. When the ride turns colder, a detachable 80g thermal liner can be zipped in, with a zipper connection that helps anchor the liner to the pants for a more secure, consistent fit.
Fitment
Storage is set up for travel and daily essentials with 2 front cargo pockets, 1 lower back cargo pocket, 1 zippered chest pocket, and 2 inner mesh pockets. Fit adjusters at the waist and cuffs help dial in the feel, while an extended rear cut adds coverage in the riding position and a pant connection zipper helps keep the fit secure.
| Included | Fixed waterproof liner. |
|---|---|
| Included | Detachable 80g thermal liner with zipper connection to anchor the liner to the pants. |
| Included | A fixed waterproof liner helps block wind and rain, making the ST-1 Pants a reliable choice when conditions turn unpredictable. |
| Included | A detachable 80g thermal liner adds warmth for colder starts and evening rides. |
| Optional — sold separately | Fixed membrane liner for enhanced rider comfort with internal pockets for a divided chest protector and a back protector pocket. |
As stated by Alpinestars for this pants. Optional and compatible equipment is sold separately unless it is listed as included.
| Ergonomic active fit pants with pre-curved legs, 3D ergonomic knees, and a comfortable crotch construction for freedom of movement and premium riding comfort. |
| Fixed waterproof liner. |
| Detachable 80g thermal liner with zipper connection to anchor the liner to the pants. |
| Fixed membrane liner for enhanced rider comfort with internal pockets for a divided chest protector and a back protector pocket. |
| 2 front cargo pockets, 1 lower back cargo pocket, 1 zippered chest pocket, and 2 inner mesh pockets, provide generous storage capacity. |
| Sleeve volume adjusters with press buttons on the biceps, hook and loop collar, cuff, and waist adjusters provide for a well-tailored fit. |
| Extended cut on the back for greater coverage in the riding position. |
| Pant connection zipper for a secure fit. |
As listed by Alpinestars for this pants.
Provided by Alpinestars. Opens in a new tab.
