Yukata (informal summer kimono)
Cotton
Multiple shibori techniques

Shibori involves tying off parts of the cloth so that when they are immersed in dye, the tied-off parts will not absorb color.  Typically, the design is revealed by the undyed areas of the cloth.  So the less material is resisted (tied off), the faster the process can be completed.  By contrast, the more white there is in the final product, the more material had to be tied off to resist the dye, and the more time-consuming and expensive the process.  If more than one color or shade is planned for the final design, that means an additional step in the dye process, since care must be taken to expose only those areas that will receive the additional dye.