Bamboo fibre. Bamboo is a fast-growing grass plant with many practical uses. In recent years, knitting yarns have been developed using fibres taken from bamboo plants. These bamboo yarns are growing in popularity.
Uses. Bamboo has a great lustre and shine, so it can add a bit of affordable glamour to a project. It is good for warm-weather socks because of its breathability. It's also a good choice for vegans, or for anyone who is sensitive to certain animal fibres such as wool.
Usually blended. Because bamboo yarn has little stretch of its own, for sock knitting it is usually blended with another stretchier fibre such as elastic nylon or wool.