The On Women's Core Pants are lightweight performance pants designed to move effortlessly with you on every run. Built with stretchy fabric and a regular fit, they provide comfort without restricting movement. Pre shaped knee construction and a crotch gusset allow for natural motion in any direction. Ventilated details behind the knee promote airflow to help keep you cool as intensity builds. An elastic waistband with a secure cord closure ensures a stay put fit during activity. With easy on and off ankle zips and convenient storage, these pants are made for focused runs and all day comfort.