Alpinestars ST-1 Waterproof Pants. 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 80-gram 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. Two front cargo pockets, one lower back cargo pocket, one zippered chest pocket, and two 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.