600D Polyester main fabric with PU coating., 100% Waterproof and breathable Drystar® construction with waterproof lining., Removable thermal liner., Dynamic® stretch panels around crotch and back of knees., Pre-curved 3D knee construction., Accordion knee stretch panel inserts to further improve fit and feel., Waist connection zipper for secure integration with Alpinestars riding jackets., Adjustable and removable braces connect to waist., Dual waist adjustment pull tabs., Large zippered air intakes., 2 large zippered front thigh pockets.