Traditional clothing of the Edo period included the  kimono  and obi, as we know them today. The obi did not become a prominent part of a women's ensemble until the mid Edo period. It was then that designers, weavers and dyers all focused their talent on creating a longer, wider and more elaborate obi. Obi measurements were then standardized to 360cm long by 30cm wide. Edo fashion was influenced by the design and style that courtesans and entertainers wore. It is common to find obi made out of beautiful brocades and silk, with the intent of the obi being a statement piece of the outfit. Different styles of obi were worn for different formalities of occasion as well as different colors of fabric. The variety of the obi extend all the way to the way that they were tied on the kimono. There are pre tied obi knots available for people lacking the skill to tie their own, but the tying of obi is considered an art form of its own. With numerous styles of knotting and positioning, it is almost limitless in the ways you can make it your own.