? 2 King Pillowcases 20×36 Inches. 100% Lyocell Derived from Organic Bamboo. Oeko-tex 100 Certified Eco Green Fabric. Lyocell is Produced Using a Sustainable Closed-loop System, That Produces No Harmful Byproducts.? THERMO-REGULATING & BREATHABLE Cooling pillowcase keeps you 2 degrees cooler in summer and warmer in winter.? WITH HIDDEN ZIPPER The pillow will not fall out during sleep and stays inside the cover.? SMOOTH SKIN & HAIR Silky texture gives you tangle-free hair and is gentle on delicate skin.? GREEN & VEGAN textile that doesn’t harm animals. No boiling of silkworms to get the silky fabric!? THE CARE Machine wash in cold water with mild detergent. Line dry or tumble dry low. Warm iron.