Nike Train Pro Flex Vent Max 2.0 Woven Pants in Black and Iron Grey. Built for unparalleled natural movement flex fabric stretches with your body, helping you get the most out of your performance, added Dri-FIT Technology moves sweat away from your skin. Featuring a standard fit and an elasticated ankle cuff, Zip mesh interior pockets to side and swoosh print to leg completes. Mindfully made from at least 75% recycled polyester fibers.