- 12oz Heavy duty denim - Reinforced in the seat, hip & knee panels - Aramid fibers are a class of heat-resistant synthetic fibers, used in aerospace and military applications, for ballistic rated body armor fabric and ballistic composites - Pockets for knee armor (armor sold separately) - Added cotton comfort layer - Stretch panels at knee & upper seat areas - Ride-friendly cut - 7 pockets including 2 zippered pockets - Reflective stripe on legs & tail bone - Available in regular and short lengths