Description The Performance Apron Chaps feature Avertic Pro by EngtexÂ, a cut-retardant material designed to reduce the risk of severe injury in the event of contact with a rotating saw chain. They are made from water- and oil-resistant Cordura Nylon, a tough material with exceptional abrasion resistance that provides long-lasting comfort. The Performance Apron Chaps also have interlocking leg buckles to keep them in place. In addition, these chaps feature a cargo pocket for quick storage on the left leg panel as well as a 1-1/2" interlocking waist buckle that adjusts from 30â to 42â (optional waist extender, sold separately, fits waists up to 56â).