This pillow is optimized for side sleepers. Retail price: 16,200 yen. Includes two height adjustment pads and a spare pillowcase. Side sleepers, how about it? There are two pillowcases, retail price 5,400 yen, and the pillow itself was 10,800 yen. It's a bit difficult to see, but I've taken a picture with the pillowcase on. Mesh fabric provides excellent breathability. Thank you for looking.