The entire material of our slippers is plastic, commonly known as PVC. Both the sole and the upper part are made of PVC. Made of PVC material, environmentally friendly, resistant to bending, highly elastic, very comfortable to wear on the feet, with high wear resistance and good toughness. It has a certain degree of softness. The quality is very good, and it is slip-resistant. You can go into the water. No strange odor. No foot odor, quality guaranteed, so you can buy with confidence!