DST (Durable Stretch Technology) is constructed of four-way HEX-stretch fabric for excellent mobility with heavy-duty durability for optimum protection and movement. The Fly Racing Evolution limited edition Brazen Motocross pants offer this revolutionary technology with laser-cut perforations in key areas for enhanced airflow with stretch mesh for ventilation with superior movement. Relaxed leg cuffs give optimum comfort, and leather heat shield pads with Aramid stitching give increased durability. An advanced Lycra liner makes these pants extremely comfortable, while the Fly Racing Boa system provides easy and fast adjustability and ratcheting fly closure. The Evolution DST pants also feature ergonomically pre-shaped knees that accommodate most knee braces and guards and give maximum comfort in the riding position. A full-floating 900D seat panel surrounded by HEX-stretch material moves naturally with your body and is ultra-durable. The exclusive zip lock system keeps your pants securely closed.