Purchased new in September 2025 and used for newborns to 3 months. I used one of the two height adjustment sheets, moving it to the foot side, and the baby slept well with a C-curve back. There was also less spit-up. I'm selling it because the baby started needing to be right next to me to sleep, so I stopped using it. 【Product Description】 Retail price: 9,990 yen ● For naps in the living room or as an instant bed when going out or visiting relatives ● Safe co-sleeping without worrying about rolling over! ● Includes two height adjustment sheets to reduce spit-up ● Height adjustable in 3 levels ● Removable side cushions ■ Composition Cover Surface Outer fabric: 100% cotton Filling: 100% polyester Inner fabric: 100% polyester Back: 100% polyester Mattress Side fabric: 100% polyester Filling: 100% polyester Height adjustment sheet Side fabric: 100% polyester Filling: Urethane foam ■ Cover: Machine washable (use a net) ■ Main body: Hand wash ■ Height adjustment sheet: Not washable