ECCO ATH-1FW slip-ons are made of elastic textile. Modern ECCO FLUIDFORM™ technology allows you to create a comfortable anatomical last and provides reliable fastening of the sole to the upper without glue and seams. The SHOCK THRU heel insert evenly distributes body weight and softens the impact load on the foot. The lightweight and flexible ECCO PHORENE™ sole has high cushioning and retains its properties even with temperature changes.