The flap model is made of plastic. The sole is abrasion resistant. Your child can easily adjust the flaps thanks to the adjustable Velcro fastening. A very light and comfortable model. They are perfect for the beach, swimming pool, but also for everyday use on hot days. The profiled insole will ensure comfort during use. Your child will surely be satisfied with these flip-flops, so don't wait any longer! When choosing a size, please use the size chart. 28-19/29-19,5/30-20/31-21/32-21,5/33-22/34-22,5/35-23,5cm