Designed for superior dirt riding performance, the Alpinestars Supertech pants offer a race-engineered fit designed for aggressive off-road riding and professional levels of movement, flexibility, and comfort. Engineered with an athletic "race" fit, the Supertech pants are made from a chassis consisting of advanced stretch, durable stretch Ripstop, and ultra-lightweight construction. Highly breathable stretch zones on the full lower leg make this ultra-lightweight while also delivering superior airflow and stretch. Goatskin leather and stretch aramid inner leg reinforcements provide durability and coverage in vulnerable areas. The performance-engineered single-layer construction gives enhanced wearability, superior comfort and ease of use with knee braces. Strategically positioned perforation gives additional airflow and optimum ventilation, and these are liner-less. A secure SXM auto-lock magnetic buckle gives a quick and secure closure with a silicon inner waist to keep the pants in position. Fade-resistant graphics keep these looking great, and a covered zip fly protects your paintwork.