Starter pants nylon size extra large brown chocolate black stripe

Starter pants. Size extra large. Made in Pakistan. The shell is 100% nylon. Lining is 50% cotton and 50% polyester. are they vintage? I don't know there's a white lining interior. The pants are nice chocolate brown black stripe with white trim on the outer leg. Elastic waist with a drawstring. There is a pocket on each side. A zipper at each ankle. No flaws pretty brown nice Chrisp. No stain or rips.