Our lower-impact take on the premium Chuck 70 is ready for winter with a recycled knit build made from about 85% polyester.New engineered knit construction results in a fuzzy terry feel for warmth in cold-weather months.The partially recycled outsole is made from about 12% rubber scraps,creating a textured,speckled look.Plus,a comfort insole made from approximately 75% recycled OrthoLite helps keep you comfortable.