The Alpinestars Techstar Sein MX pants offer the optimum blend of performance and durability with a ‘race’ fit. The main chassis is constructed from an advanced blend of stretch rip-stop fabric and 600D poly-fabric for enhanced stretchability and durability. It is ultra-lightweight, stretchy and durable, while also delivering superior airflow thanks to the highly breathable stretchnet zones. ‘Babel’ knee flexion areas feature a large open vent design, allowing for a slimmer fit while still being compatible with all Alpinestars knee braces. The pre-shaped, reinforced and padded 3D knee construction is also equipped with a hidden stretch spandex expansion gusset for a customised fit. The liner-less design gives enhanced rider comfort, making these more lightweight and easier to use with knee braces. The secure MXM auto-lock magnetic buckle provides a quick and secure closure. Goatskin leather inner leg reinforcements give durability and coverage in critical areas, and a silicon inner waist keeps the pants in position. The covered zip gives added durability and protects the tank.