Nike Dri-Ft Women's Black Bootcut Yoga Pants Leggings Medium Racing Flags. These classic black bootcut yoga pants from Nike are the Dri-Fit material. They are a full length boot cut style. They have the secret pocket slit inside the back of the waist. These are part of Nike's recycling program and were made with 10 plastic bottles. They are made in sri lanka. They also have a custom set of racing flags at the ankle of one leg. There is some cracking to it. Measurements are shown in the photos.