You can run all day and night in these comfortable and lightweight shorts. Dri-FIT stretch woven with a Dri-FIT crepe liner to help keep you dry and comfortable. Drawcord waistband for a custom, comfortable fit. Nike+ sweat-resistant pocket with tactile click wheel dot at side right hip. Reflective dot heat transfer at lower left leg. Swoosh design heat transfer at lower back left leg and Swoosh+ design heat transfer on Nike+ pocket. 4 inseam. Body is 86% polyester and 14% spandex, lining is 100% polyester. Machine washable.