This is an elevated baby lounger, designed to help babies with reflux. It really worked for my son, and he was very comfy in it. It fit in both our bassinet and our stroller bassinet. Very good condition - used only about 5 times, never had any spit up or stains. Smoke free home. Recommended for babies 0-4 months. Adjustable. From the website: Give your baby a restful, comfortable space designed to provide soothing support and help with digestion. The Ani- Reflux Elevated Baby Lounger is crafted to simulate the cozy, snug environment of a mother's womb, making your little one feel secure and relaxed. The lounger's memory foam filling and pure cotton bedding provide gentle support, while the ergonomic 15° incline helps reduce reflux, minimizes spitup, and promotes easier digestion, all in alignment with your baby's natural development. Key Features: Womb-Like Design: Emulates the snug space of a mother's womb, offering comfort and relaxation. Supportive Shape: Designed to support your baby's body, encouraging healthy development and growth. 15° Incline for Digestion: Elevated to help with reflux