Abc technology, reflective, drawstring. Designed for running. Streamlined fit that gives glutes and thighs breathing room, then tapers to hem. Intended to sit at ankle for 32"-34" inseam. Our abcTM technology uses an ergonomic gusset to remove tension from the crotch of our pants. These lightweight run pants feature built-in ventilation and our abc gusset so you can go the distance, unrestricted.