The paced and interval runs, even on cold days, ended up being worth it. You have arrived at the starting line. All that's left now is to slip on these loose fit adidas running shoes and face the distance. The mesh upper is so lightweight, you'll barely feel it on the run. Lightstrike cushioning delivers a responsive, snappy ride. This product is made with primegreen, a series of high performance recycled materials. 50% of the upper is recycled content. Virgin polyester free.