Great children's snow boots are made of waterproof textile material with stitching. Fitted on a flat heel and platform. In addition, the shoes are insulated with natural wool. This model has a zipper on the side of the upper. In addition, they can be adjusted to the width of the foot thanks to the drawstring at the top of the upper. When choosing a size, please refer to the size chart.27-17.5/28-18/29-18.5/30-19/31-19.5/32-20 cm