90% Cotton,10% Elastic fiber BREATHABLE MATERIAL: 90% Cotton, more breathable and softer; 10% Elastic fiber, trackpants with highly stretchable material offers great flexibility and comfort of movement during workout LARGE POCKET: Functional side and back pockets keep your phone, keys or wallet from falling out when jogging or running PERFECT DESIGN: Stylish design of tapered leg and drawstring closure make you look slim and fit. Elastic cuff is not too tight, and gives the Sweatpants great mobility during exercising VERSATILE JOGGERS: Trackpants are perfect not only for jogging, running, training, and other outdoor sports, but also for workout at gym; EASY CARE: Fade, shrink, and wrinkle resistant; Track pants are quick dry and machine washable.