There's a fun secret about the Nike Air Force 1 Crater: It's made from at least 20% recycled content! A see-through design gives a peek into these legendary kicks. Plus, soft Crater Foam uses Nike Grind rubber for a lightweight and unique feel. Innovative Comfort Soft Crater Foam uses Nike Grind rubber for a look that's uniquely speckled and provides lightweight cushioning. Built to Last Synthetic leather, synthetic suede and textile combine for durability and support to bring a new feel to the '82 legend. All About Air A hidden Air-Sole unit under the heel provides cushioning just like the original AF-1.