STRETCHY DESIGN FOR NATURAL MOVEMENT. Made with soft, stretchy fabric, the Nike Flex Pants help you move freely before, during and after your routine. A tapered design reduces distractions and let you focus on your workout. Made to Move Nike Flex fabric stretches with your body, helping you get the most out of your performance â without getting in your way. Focused Comfort Tapered design follows the natural shape of your legs to reduce distractions. Product Details Standard fit for a relaxed, easy feel Elastic at back hems Zippered phone pocket Foldover elastic waistband and drawcord 100% polyester Machine wash Imported Style: CJ2218; Color: Black/Dark Grey; Gender: Male; Age Group: Adult