Wash Towel - Pure Fiber?s bamboo towels are made of 100% Bamboo Yarn. This is to enhance the softness and luxurious feel of the towels. In addition, this is to maintain the hypoallergenic affects of bamboo and to minimize the use of chemical to blend different fiber materials together. So go ahead, indulge yourself in these natural luxury because not only are they good for your body and soul, but also our environment