Size and Color: One package contains 4 light grey silk satin pillowcases (18 x 6 inches / 46 x 15 cm), pillows not included. They complement various bedroom décor options. The four-piece set facilitates easy alternation and washing. Due to photography, colors may vary slightly, and our pillowcase sizes may also differ. Please confirm the size before ordering Soft Silk Satin Fabric: Our round pillowcases are made from premium silk satin fabric, soft, comfortable, and silky to the touch. Lightweight and breathable, it won't feel stuffy, providing a smooth and soft texture to ensure a restful sleep. And it's machine washable Hidden Zipper: we use a hidden zipper to prevent the pillow from coming out, and the neck pillow covers with zipper are not easy to hurt the skin unintentionally, the zipper slides smoothly and is not easy to tear, the large opening and long zipper allow you to easily load and remove the pillow Easy to Wash & Care for Hair and Skin: The glossy, smooth fabric texture allows for easy head movement, reducing friction that can lead to wrinkles, frizz, and breakage. Its low absorbency also helps retain skin moisture. The round roll pillowcase can be hand-washed or machine-washed in cold water without wrinkling. We recommend using a laundry bag when machine washing and washing separately from other colored clothes Ideal Pillowcase Choice: Our cylindrical pillowcases have a lustrous, luxurious look, making them ideal for home, office, and travel. Their beautiful appearance adds a touch of style to home décor and makes them a thoughtful gift for family and friends