Our Thessa toe ring sandals are made out of top grain vegetable tanned leather that is natural and chemical free. Each pair is meticulously handcrafted by a family owned workshop in Greece using traditional techniques. 100% natural chemical free vegetable tanned leather. Features a rubber sole. Handmade in Greece. Our sandals are made of natural vegetable tanned leather which will soften over time and develop a beautiful patina. Sandal Size Conversion Chart US Womens EU Womens 4 35 5 36 6 37 7 38 8 39 9 40 10 41 11 42 * If you are a half size, we recommend that you go up to the nearest whole size.