Adidas Women"s Firebird Track Pants Super The 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. Inseam 30"