Alpinestars St-1 Waterproof Pants – Black

Alpinestars ST-1 Waterproof Pants are men's waterproof motorcycle trousers for touring and adventure riding. They have a fixed waterproof liner and a detachable 80 g thermal liner, secured with a zipper anchoring system.

The ACTIVE touring fit includes pre-curved legs, 3D-shaped knees and a flexible crotch. A fixed mesh liner is included, and ripstop reinforcements on the inner legs provide abrasion resistance. Two front zippered pockets offer storage, while hook-and-loop ankle adjusters and waist volume tabs allow adjustment. A connection zipper enables integration with Alpinestars jackets; reflective detailing is placed on the thighs.

• CE Level 1 Nucleon Flex Plus knee protectors with a 3-tier, colour-coded positioning system.
• CE Category II EN17092-4:2020 A Class garment; impact protection certified to EN17092-6:2020 C Class Impact.
• UK waist guide: S 30 (31 length), M 32 (31 length), L 34 (32 length), XL 36 (33 length), 2XL 38 (34 length), 3XL 40 (35 length), 4XL 42 (33 length).

Alpinestars garments can fit smaller than other brands. The sizing guide is approximate and cannot determine an exact size; moving up from a previous motorcycle trouser size may be needed to allow for the thermal liner.