Our Silk Pillowcases are made from 100% machine washable silk, hand-dyed, and hand-mixed with non-toxic pigments in small batches at our studio in Santa Ana, California. Our silk pillowcases are naturally hypoallergenic and help your skin and hair stay more hydrated. Silk keeps you cool in the summer and warm in the winter. Once you sleep on our silk pillowcase, you won't be able to settle for anything less. Includes 1 silk pillowcase with envelope closure. Standard: 20 inches by 26 inches King: 20 inches by 36 inches Care: Machine wash on a gentle cycle (in a garment bag if possible to prevent damage), hang or lay flat to dry.  All of our products are packaged and shipped in sustainably focused and intentionally chosen packaging options.