I purchased this from MUJI a month ago. I tried it at home, but the height was too much for me, as I am small, so I am selling it because I bought another pillow. It's made of a material similar to Airweave and is a washable pillow. It's new, but it has been stored at home, so please refrain from purchasing if you are looking for perfection. Price is not negotiable. ◆MUJI Pillow to Support Turning Over 35 x 60 x Height: Center 8.5, Sides 12 cm Product number 84666155 The structure and design are made to smoothly accommodate any sleeping position, whether you sleep on your back or side, which changes with turning over. The center part is lower and softer than the sides, designed to allow your neck to be at a natural angle when sleeping on your back. When sleeping on your side, it is desirable for your neck to be straight from your neck to your spine, and for your shoulders not to be compressed, so the sides have height and firmness. ※Due to the nature of the material, it may feel firm and high when you first start using it. With continued use, it will gradually conform to the height of your head. Firmness: Firm ※The center is designed to be softer than the sides. Height: Center...Normal Sides...High 【About the Material】 It is highly breathable, does not get stuffy, and is hygienic because it can be washed with a shower. 100% recycled material, polyethylene, is used. Scraps generated during the manufacturing process are reused within the factory. 【About Care】 ① If you are concerned about sagging Set the water heater temperature to 42°C to 50°C and pour hot water over the area you are concerned about with a shower. ※Avoid using hot water above 51°C as it will degrade the quality. ② If you are concerned about odors or stains and want to maintain it Rinse with a shower using water at room temperature. If the dirt is severe, use a diluted neutral detergent.