Keep pace with the Nike Challenger Tights. They use a stretchy design that helps you run without restriction. Plenty of pockets let you bring your essentials along for your miles. This product is made with at least 75% recycled polyester fibers. SOFT SUPPORT, MADE TO MOVE. Keep pace with the Nike Challenger Tights. They use a stretchy design that helps you run without restriction. Plenty of pockets let you bring your essentials along for your miles. This product is made with at least 75% recycled polyester fibers. Stretch Your Miles Nike Power fabric provides a range of stretch and support to help you power through whatever your sport or workout demands. Essential Storage A pocket at the center back is large enough to hold a phone. It has a durable coating to help keep your device dry. An extra drop-in pocket at the side lets you quickly store a key or card. Easy On, Easy Off An elongated ankle zipper provides easy on and off over your shoes. More Benefits Encased elastic waistband with an external drawcord lets you adjust the fit. Dri-FIT technology helps you stay dry and comfortable. +Pet and smoke free home.