Durable 4 way stretch main body flex fabric provides excellent mobility Cordura fabric back panels increase durability in the most risk areas Back stretch polyester spandex to maximize the elasticity Net on the b ack of the legs and laser holes in the key areas f or the best airflow Premium heat transfer logo treatments Full grain leather knee panels provide coverage from abrasions and provides a best grip on the motorbike Rubber knee air vents improve the airflow and give more protection to the knees 2 side adjuster provide a perfect fitting for all the sizes