The Alpinestars Track V2 pants are made with a premium leather main chassis constructed from 1.3 mm genuine bovine leather. Extended high rear waist construction provides greater overlap when used with a riding jacket. Internal mesh lining with stretch panel inserts work in conjunction with outer stretch zones for freedom of movement. Fully CE certified riding garment. Premium Leather chassis Accordion leather stretch panels Extended High rear waist Pre-Curved legs Waist adjustments for perfect fit Internally reinforced seat and knee area Replaceable sport knee sliders Internal mesh lining CE certified hip protectors Dynamic Friction Shield Fully CE certified pants