This is a custom-made pillow that adjusts to your body. It can be washed in a household washing machine (using a net). Perfectly adjustable with three height adjustment methods. Suitable for both back and side sleepers. Three-dimensional shape for easy turning over. The double-layered structure of knit fabric and honeycomb mesh fabric provides excellent breathability and comfort. Comes with a separately sold pillowcase, making it a great value. First come, first served.