This is deadstock from a certain zori (Japanese sandal) shop. More accurately, it's stock from a geta (wooden clog) shop. Unlike modern items, the materials are all authentic. The size is approximately 11 cm wide at the widest point, and the length is just under 24 cm, measured by an amateur. However, it seems that it's considered stylish to wear them with the heel slightly exposed, so please consider this as a reference. Regarding the pattern and material of the thong (hanao), if you're unsure, I have another item listed. I've included a bonus image of the thong on a setta (another type of Japanese sandal), so if you comment, I'll include a pair with this item. Please assess the condition from the images and consider purchasing if you are satisfied.