Nike Dunk High NLLimited Edition Dunks featuring no lining!The NL stands for no liner because there is nothing between your foot and the leather in these shoes. The Dunk NLs are rumoured to be part of the Nike Considered line which is manufactured with two long term goals in mind - to eliminate waste and toxic substances.About Nike Dunk shoes: The Nike Dunk made its debut in 1985 as a technical basketball sneaker. Designed with multiple panels for support and a low profile to enhance movement on the court, the Nike Dunk was an instant hit. Plus, Nike added to their popularity by producing the Dunk in specific colorways designed to match college uniforms. After a period of cease production, the Nike Dunk returned in 1998 and is still very popular today.