It doesn t get any more classic than the adidas Firebird Track Pants. Styled with straight legs, 3-Stripe detailing and a Trefoil logo, this comfy, casual pair is a staple in every sense of the word. 100% Polyester (Recycled), Stand Collar, Zip Closure, Zip Pockets, Embroidered Branding, Adidas. Adidas Men's Firebird Track Pant Black/White.