Women's Big Star sneakers are made of a combination of textile and eco leather. Slip-on model with additional lacing. The Memory Foam System insole remembers the shape of the foot, provides a perfect fit, absorbs shocks, is resistant to deformation and allows moisture to evaporate and temperature regulation. These shoes are extremely light, which makes them even more comfortable to use!When choosing a size, please refer to the size chart. 36-23,5/37-24,5/38-25/39-25,5/40-26,5/41-27cm