Hara-awase obi or chuya obi is an informal obi that has sides of different colours. It is fequently seen in pictures from the Edo and Meiji periods, but today it is hardly used. A chūya obi ("day and night") has a dark, sparingly decorated side and another, more colourful and festive side. This way the obi can be worn both in everyday life and for celebration. The obi is about 30centimetres (12in) wide and 350centimetres (11ft) to 400centimetres (13ft) long.