Nylon denim with knitted fabric construction for enhanced protection against abrasion & cuts. Features Inner liner on knee compartment for enhanced rider comfort. Bio-Flex knee & hip armor for high levels of impact protection. Two pockets on front & back for secure & convenient storage. Additional small pocket & hidden rear pocket for real world practicality. Ergonomic cut for enhanced rider comfort. According to European statutory law the mark is a conformity requirement for the marketing of this product. The following standards apply to this product: Category II PPE Regulation (EU) 2016/425 –A class. Level 1 EN1621-1:2012 Alpinestars Bio-Flex Plus knee & hip protectors.