Nike Flex fabric stretches with your body, helping you get the most out of your performance—without getting in your way. Hem vents let you move freely through squats and lunges. Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable. Standard fit for a relaxed, easy feel Elastic waistband and drawcord Side pockets with an internal mesh sleeve on the right Body: 100% polyester. Pocket bags: 100% recycled polyester.