Crafted from stretch woven fabric, the 2XU Aero 5" Running Shorts are lightweight, comfortable and breathable. Fast wicking properties draw moisture away from the skin so you remain dry while a brief liner and elastic waistband with an internal drawcord enhance the fit. A back zipper pocket gives secure storage to any small essential items and reflective detailing works to keep you visible when running in low lighting conditions. Care Instructions Machine wash in cold water with like colors. Do NOT Tumble dry. Hang to dry in a cool shady area away from sun. Do not use bleach, fabric softeners or dryer sheets. Do not iron.