Hybrid trainers by BOSS, designed in a running style in mixed materials with an EVA rubber outsole and logos on the tongue and side panel. For our BETTER BOSS products, we always use at least 60 percent better raw materials. This product is made from at least 60 percent recycled polyester. Recycled polyester is an artificial fibre made from oil based waste such as old PET bottles. Laces. Fully lined. Material composition includes 100 percent Polyester. Sole is 60 percent Ethylene vinyl acetate and 40 percent Rubber. Facing is 100 percent Cow skin, 60 percent Polyester, and 40 percent Polyurethane. Upper material is 100 percent recycled Polyester. Innersole is 48 percent Polyester, 48 percent Viscose, and 4 percent Polyurethane.