100% COTTON PILLOWCASES: Our Enveloped pillow cases are made by 100% Egyptian Cotton with high 400 thread count cotton fabrics, the sateen weave provides durability like a hotel pillowcase and stays soft for life. When you sleep on our cotton pillowcase, you will feel the same experience as a 5-star hotel! STANDARD 100 by OEKO-TEX CERTIFICATION: Our pillowcase are OEKO-TEX certified so they're good for you and for Mother Earth. Skin-friendly, safe for you and your loved ones. These pilow cases are a better choice for your health and are the preferred material for children and sensitive skin ENVELOPE CLOSURE DESIGN: Our durable & quiet pillow case is soft to the touch and noiseless when moving around while asleep. Envelope closure design for a perfect fit, slips easily into your pillow, keep your pillow clean, fresh and built to maximize the lifespan DURABLE AND EASY TO MAINTAIN: Our highest quality materials ensure they're durable, no matter how many times you wash our pillowcases, they won't shrink or fade. The cotton fabric will get softer with every wash, you can indulge in superior softness with regular washes and short dry cycles. Easy Care: This pillowcase set is machine washable for easy maintenance. Machine wash on cold with like colors. Use only non-chlorine bleach if necessary, tumble dry low and cool iron if needed. Please take the product out of the dryer immediately after drying to reduce wrinkles SHUNJIE.HOME has over 20 years home textile experience and are committed to improving the quality of life. Our products not only keep pace with trends, they are also comfortable and durable.The pillow protectors are made of 100% cotton which are soft breathable and comfortable. 400 thread count cotton pillowcases are also durable and are good for your skin and hair. They are suitable for home,hotel and dorm. Machine wash is another lightpoint.