What is Noren?
Noren is a short curtain we often see at the entrance of the shops or the restaurants in Japan.
In public areas, noren are used by Izakaya, sushi restaurants, shops and onsen and they often display the names of the businesses or the brand logos. When it's hung outside, it means the shop is open. So they are usually taken down when closing the stores.
Actually they are not only for the shops or the restaurants. It also can be used as the room divider or the wall decor inside the house. Sometimes, they are used to block the direct sunshine to keep houses cool, or to retain heat during cold weather.