adidas Originals Firebird Track Pants - Men'sThe adidas Originals Firebird Track Pant is a relaxed-fit, straight-legged pant that's perfect for exercise or casual wear. This pant is a perfect companion to the classic Firebird Track Jacket, or it can be just as stylish on its own. The shiny tricot outer layer and brushed, soft lining gives you a casual, sporty look. 100% polyester tricot. (medium grey heather = 100% organic cotton) Imported.