Some things just get better with wear and age. Our sheets made of 100% Viscose from Bamboo are no exception. The more you use them and wash them, the softer they become. We don't add anti-wrinkling agents or chemicals, either. As in life, a few wrinkles are just part of the experience. Once you've had our Bamboo Dreams sheets, you'll never go back. Machine wash cool with gentle detergent and machine dry. That's all the care they need.