This Japanese House-Sandals are called "Zouri" in Japan.
The history of Zouri goes even back to the Heian era 1200 years ago. During these years they where made by different materials such as:
straw, cork, rubber, grass, and now for indoor also by cotton.
It is also said that Zouri are good for training the foot and strengthening leg muscles.
Apart from that, walking in Zouri feels like a foot massage, and they are perfect for the indoor life.
For purchasing a pair of Zouri please visit: Japanproxy.ch