Light Big Star sneakers are made of airy fabric. Slipon 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.3622.5/3723.5/3824/3924.5/4025.5/4126cm