Great sandals with an adjustable strap fastened with a buckle. Made of plastic resembling rubber. The platform will protect against uneven ground. You can adjust them to the width of your leg. You absolutely must have them! These sandals will make you feel extremely comfortable on hot days! When choosing a size, please use the size chart. 36-23,5/37-24/38-24,5/39-25,5/40-26/41-26,5cm