Premium leather main chassis from 1.3 genuine bovine leather. Extensive high-density perforation panel on thigh. Extended high rear waist construction provides greater overlap with the riding jacket. Waist connection zipper allows attachment to Alpinestars riding jackets. Hip with loop construction for hip protector available as accessory upgrade. Alpinestars GP-R protection on knee. Replaceable sport knee sliders for excellent impact and abrasion resistance.