"The mattress protector cover is 100% natural Tencel made from Eucalyptus based fiber. Tencel fibres are made from the pulp of Eucalyptus wood and make for a very durable yet silky smooth fabric. The making of Tencel fibers is very environmentally friendly as the Eucalyptus trees require very little water. Turning wood into fiber means that you get to sleep on a natural cover without any negative impact on the environment. https://sweetzzzmattress.com/cooling-mattress-protector/"