Outer shell denim (100% cotton) Fit/features 4 external pockets Key pocket Protection pockets for optional hip protectors Du Pont™ KEVLAR® fibre reinforcement on seat, hips thighs & knees (Du Pont™ KEVLAR® are trademarks or registered trademarks of E.I. du Pont de Nemours & Company) complete with detachable stirrup to prevent legs riding up pockets for optional knee protectors