Nylon denim with knitted fabric construction for enhanced protection against abrasion and cuts. Features Inner liner on knee compartment for enhanced rider comfort. Bio-Flex knee and hip armor for high levels of impact protection. Two pockets on front and back for secure and convenient storage. Additional small pocket and hidden back 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 and hip protectors.