This is the 10mois Tamago Mat Oくるみ Sleep. I used it from immediately after birth until about 3 months old. Even when my baby was crying hysterically, putting them in this helped them fall asleep quickly, which was a lifesaver. I'm selling it because my baby has outgrown it. It has been home-cleaned. The cover has cute rabbit ears. The double zipper allows for diaper changes while the baby is still in the swaddle. If you're having trouble with your baby's sleep, please consider it. It will be folded in half and shipped in a cardboard box. Purchase price: 6380 yen Materials: Cover: 66% cotton, 31% polyester, 3% polyurethane Inner core: 100% polyester Size: Cover: Approximately 66cm x 28.5cm (excluding ears) Inner core: Approximately 64.5cm x 27.5cm x 2cm thick (For newborns up to approximately 66cm) Country of manufacture: Cover: Japan Inner core: China Popular model: Tamago Mat Oくるみ