This is a baby pillow purchased online for around ¥7,000 to help correct positional plagiocephaly (flat head syndrome). It is used by inserting two knob-shaped cushions into the pillow. You can put one on each side, or you can put both knob cushions on the side the baby favors. It also comes with a spare cover. We used it from when our baby was a newborn until about 6 and a half months old, and we feel it was effective. There are some places on the tag and cover where the sewing thread is coming loose. Please check the images. I think it doesn't affect the use. There are no stains. Type... Pillow