Rebar M4 Low Rise DuraStretch Made Tough Double Front Stackable Straight Leg Pant Rebarâ„ Made Tough DuraStretch Work Pants deliver strength minus the stiffness or bulk. Built-in stretch provides exceptional comfort and mobility. For our double front style, a reinforced thigh chap and triple-needle stitching add extra durability. 9 oz DuraStretch canvas Utility pocket and pen slot Carabiner loop Thigh chap for reinforcement Articulated knee with knee pad compatibility Triple needle stitching at stress points 99% cotton, 1% spandex.