Material 325 gr./11.05 oz denim with stretch Du Pont KEVLAR® fabric in hip, knee & seating area (60 % Du Pont KEVLAR®, 40 % polyester) Protection Ultra flat knee protectors SAS-TEC® SC-1/KA / level 1 (EN 1621-1:2012) Hip protectors upgradable SAS-TEC® SC-1/07 or SC-1/KA Class A certified according to EN 17092-4:2021 Other Features Reflective tape inside for rolling up