Women's Big Star sneakers are made of a combination of fabric and eco leather. The shoes also have a reinforced heel. Sneakers have a Memory Foam System insert that remembers the shape of the foot, provides a perfect fit, absorbs shocks, is resistant to deformation and allows moisture to evaporate and temperature regulation. The shoes were set on a platform and a flat heel. When choosing a size, please refer to the size chart.36-23/37-23,5/38-24,5/39-25/40-25,5/41-26,5cm