I purchased this to prevent flat head and address positional plagiocephaly. I used it from about 2 to 4 months old, especially when sleeping at night, but stopped using it when my baby started showing signs of rolling over. My baby slept well when used together with the green pillow (also listed). There are some pills on it since it didn't come with a cover. It might not be noticeable if you put a towel or handkerchief over it... maybe. If you don't mind, please consider it. I purchased it on Rakuten for 3,300 yen around June 2025. Please check the size in the images. I will fold it up small for shipping. Baby pillow with 3-sided adjustability for enhanced safety. - Color: White - Design: 3-sided adjustable - Features: String storage for increased safety - Improvements: Easy adjustment with external press - Improvements: With safety balls