MOISTURE-WICKING MIDLAYER. The Nike Element Crew returns with an updated design that's made using recycled materials. An all-new sleeve features a window that lets you easily check your watch. Use it as a midlayer, first layer or on its own. This product is made with at least 75% recycled polyester fibers. This product is made with at least 75% recycled polyester fabric. Updated cuffs and sleeves feature a watch window so you can keep track of your miles on your device. Thumbholes help you extend coverage over your hands. Half--zippered design lets you adjust the airflow. Left stash pocket lets you store a key or card. Dri-FIT technology helps you stay dry and comfortable.