Supertech is Alpinestars innovative Motocross apparel line, designed for superior dirt riding performance. Featuring an innovative engineered fit design, a chassis consisting of advanced stretch material and an ultralightweight construction with a clean design and an aggressive look, the Supertech Pants incorporate a host of race-proven technologies for comfort and performance-winning pedigree in Supercross and Motocross. Rider-engineered fit and performance shape designed for aggressive riding and professional levels of movement, flexibility and comfort. Main chassis constructed extensively from an advanced stretch rip-stop fabric. The textile fiber composition is specifically developed by Alpinestars for optimized mechanical properties including strength, elasticity and abrasion durability. Double overlap waist Velcro closure system and high strength ratchet system is adjustable for a secure and personalized fit. Liner-less design and overlock flat seam interior for optimized rider comfort and effortless on and off with knee braces or knee guards. Highly heat resistant stretch aramid fiber reinforced panel on medial knee for comprehensive heat resistance, comfort and durability.