Supertech is Alpinestars innovative Motocross apparel line, designed for superior dirt riding performance. Featuring an innovative performance fit design, a chassis consisting of advanced stretch material & an ultra-lightweight construction with a simple, clean design & an aggressive look, the Supertech Pants incorporate a host of race-proven technologies for comfort & performance-winning pedigree in Supercross & Motocross. Features Rider engineered fit & performance shape designed for aggressive riding & professional levels of movement, flexibility & comfort Main chassis extensively constructed from advanced stretch rip-stop fabric. The textile fiber composition is specifically developed by Alpinestars for high level mechanical properties including strength, elasticity & abrasion durability Liner-less design & flat seam interior for optimized rider comfort 600 Denier reinforcements on seat area provide seam strength, durability & critical coverage Dual-layer 600 Denier knee panel for durability & freedom of movement. Stretch mesh inserts at back of knee add flexibility & air flow Open mesh inserts positioned to flow cooling air into the hip area & exit warm air at the back 3D leather knee panels backed with 600 Denier designed to work with knee braces for riding feel, grip & control, plus heat resistance & durability High heat resistance stretch aramidic fiber reinforced panel surrounds the knee, extending heat resistance, comfort & durability Double overlap waist Velcro closure system & high strength ratchet system is secure & finely adjustable for a personalized fit Leg cuff features stretch mesh insert for easy on & off Silicon print on inner waist to keep the pants in position Sublimated fade-resistant graphics No lining for effortless on & put off with knee braces or knee guards Overlock seams construction ensure a “slick” inner surface for optimized comfort