Joe Rocket Rocket 3.0 Mens Denim Motorcycle Pants - 38 Short 14oz Heavy duty denim Reinforced with 3 layer seat &amp; knee panels featuring abrasion resistant Aramid 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 Added cotton comfort layer Stretch panels at knee &amp; upper seat areas