Noren (暖簾) are traditional Japanese fabric dividers hung between rooms, on walls, in doorways, or in windows. They usually have one or more vertical slits cut from the bottom to nearly the top of the fabric, allowing for easier passage or viewing. Noren are rectangular and come in many different materials, sizes, colors, and patterns.
Noren were originally used to protect a house from wind, dust, and rain, as well as to keep a house warm on cold days and to provide shade on hot summer days. They can also be used for decorative purposes or for dividing a room into two separate spaces. (Wikipedia)