NAI-AR. These men's clog slippers are made of polyester. The sole is flat, 1 cm thick and made of rubber. It has a removable insole with a 2.5 cm heel wedge and gives the shoe a total height of 3 cm. The inner insole is lined with towelling for extra comfort. This product is 100% vegan. This model fits true to size; if you are between two, we recommend choosing the larger size.