Today we get a behind the scenes glimpse into the Nike Running design process with this intriguing wear-test sample of the nike running revolution 4 propeller for sale. As you can see if you’re familiar with the shoe, this version features a very different sole design than the one currently on the market. While the waterproof model features laser-cut siping within the dual-density Lunarlon sole, this design features a series of marshmallow-like pods for is outsole. Is this an early scrapped version of LunarEpic, or an upcoming sole design that will be used on a future silhouette? We can’t be sure right now, but enjoy a look at this sample, and if you’re the ultimate Flyknit collector, you can add them to your collection via eBay.