Wool is best known for its moisture wicking properties. Wool acts as a natural insulator for both cool and warm environments. It is also anti-microbial which allows it to keep odors at bay. However, some wool may be coarse and scratchy.

There are lots of different ways to make Rayon. Some options are more sustainable than others. For instance, Rayon, which is made from eucalyptus or bamboo, is a good option. These plants grow quickly and are certified as sustainable sources. Even so, the chemical treatments can be problematic. But if you opt for versions that have minimal layers of chemicals, then Rayon can work out to be a reasonably neutral option in terms of environmental impact. 

Lyocell, commonly known by its trade name Tencel, is an eco-friendly type of rayon. It's produced using a closed-loop process, so fewer chemicals are used during its production, and they're recycled and reused. 

Comparing the Benefits of Rayon and Cotton Fabrics

Lyocell