Light Big Star sneakers are made of airy fabric. Slip-on model with additional lacing. The shoes have a Memory Foam System insole that remembers the shape of the foot, provides a perfect fit, absorbs shocks, is resistant to deformation and allows moisture evaporation and temperature control. These shoes are great for everyday use! When choosing a size, please refer to the size chart.36-22.5/37-23.5/38-24/39-24.5/40-25.5/41-26cm