Unconventional sandals by ZAXY are made of high quality material. These shoes are 100% recyclable. In addition, the shoes are vegan and hypoallergenic. The sandals have a Velcro fastening. None of ZAXY's products contain ingredients of animal origin. Zaxy is a shoe with the smell of chewing gum that you will surely love! When choosing a size, please refer to the size chart.35/36-22,5/37-23/38-24/39-24,5/40-25/41/42-26cm