The Air Max Pre-Day is a brand new model from Nike that release honors Air Max Day (March 26). The perfect balance of late-'70s and contemporary aesthetics, the sneaker has been constructed from recycled materials such as recycled polyester and synthetic suede. Without question, the standout detail is the tooling, including a portion of the midsole hollowed-out to showcase its Air unit, while the outsole uses Nike's Grind rubber made from repurposed foams.