The first running shoe from Porsche Design: The ultra-light Porsche Design RCT NITRO® Runner combines sustainability and forward momentum. The innovative NITRO FOAM® in the sole provides excellent responsiveness and perfectly soft cushioning while weighing just 390 grams (in size 42). To give you maximum support during tough running sessions, the mesh upper has been partially reinforced and original carbon-fiber compound has been incorporated into the heel area for support. Design meets function: a characteristic Porsche Design element. No less important: the sustainability aspect. The running shoe's upper is made from recycled First Mile polyester, helping reduce waste in landfills and oceans. Lightness, support, sustainable style: No running shoe offers better performance.