2.5 inch seam Perforated with hundreds of tiny holes, our Chill shorts will revolutionize your summer running experience. The smooth four-way stretch bike-short liner takes chafe-free comfort to the next level, while the loose outer layer maximizes airflow. A no-roll elastic waistband includes an outward-facing drawstring so you can adjust your fit on the fly. A zippered key pocket on the back of the waistband keeps essentials secure.