This is a size S baby pillow from Geo Pillow. My child used it for about 1-2 months during the newborn period. There was some spit-up, and although I've washed it and the stains are gone, please refrain from purchasing if you are looking for something in like-new condition... There is no flattening, and it can be used without any problems! 〇 Washed at home 〇 No instructions or box