Fall asleep to the world's softest and coolest sheets, guaranteed. Made with premium 100% TENCEL™ Lyocell fibers derived from sustainable wood sources including eucalyptus wood pulp. So what makes our Eucalypso sheets so unique? All our fabrics are spun using our DreamWeave™ technology - a proprietary method of treating that fabric, making it silkier and cooler to the touch. Designed to help regulate body temperature and help sooth sensitive skin. Hot sleeper? Eucalypso is significantly more, cooling, breathable and more moisture wicking than cotton. Sensitive or Acne Prone Skin? Our sheets are antibacterial & hypoallergenic, helping prevent acne while you sleep so you can wake up with glowing skin. Trying to help the environment? All our products are made sustainably in small batches to meet the highest environmental standards. Sheet set comes in 4 pieces - 1 fitted sheet, 1 flat sheet, 2 pillowcases.