Nike 

Air Max Pre-Day "Warm-Core" sneakers

With a look reminiscent of Nike’s jogging shoe golden era - produced from 1979 to 1981 - and a visible Nike Air heel unit, the Nike Air Max Pre-Day breaks new ground in Air. They were constructed with a simple design that minimizes material waste with at least 20 % recycled content by weight, and positions the Air unit in an entirely new light.