My baby was sensitive to being put down, but this pillow seems to reassure them, and they started sleeping longer, which was a great help. I used it almost every day from 2 to 4 months old. Thanks to using the pillow, compared to my older children, my baby's head shape is beautiful, and I think it also helped prevent a flat head. And the way they look sleeping with this is absolutely adorable! ♡ The cover is cooling, and I think they liked the feel of it, because they loved it. I think it was better than a regular cover for a baby with a high body temperature. The included pillow is unused. ※There are yellow sweat stains on the pillow part of both the main body and the cover. I have included photos of the front and back, please check them before considering a purchase. ※I will compress it to make it as small as possible for shipping. ☆Please refrain from purchasing if you are concerned about storage at home. ☆We cannot provide compensation for shipping.