We often get asked about bamboo (viscose rayon), microfiber and other alternative fiber sheets. After spending 13 hours researching the many alternative fabric types, we think most people are better off sticking with cotton or linen. Bamboo viscose can be very soft on the skin, but it is produced with a solvent that can pollute the air and water (and cause serious health problems for factory workers). Microfiber sheets tend to be quite affordable, but washing this fabric contributes to polluting lakes and oceans with synthetic threads. Lyocell, another type of rayon often called Tencel, shows promise because it has less impact on the environment, but sheets made from this fiber tend to be more expensive than cotton. In the end, all of our experts recommended cotton or linen sheets anyway, so we decided not to test those other sheet fabrics.
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