Tackle the gym in the Under Armour Women's Rival Woven Gym Pants. They are made of 87% polyester and 13% elastane for lasting wear, and the UA Storm technology repels water without sacrificing breathability. The encased elastic waistband has an internal drawstring for an adjustable fit, and the open-leg design with an interior bungee adjust offers a custom look. Under Armour Women's Rival Woven Gym Pants Black/White, Large - Women's Athletic Performance Bottoms at Academy Sports