This is a BabyBjorn One Kai baby carrier. The box and instruction manual are not included; everything in the photos is what's available. I used this for about six months. I didn't use it very often, so I think it's in good condition, but please understand that it has been stored by a private individual before purchasing. babybjorn BabyBjorn onekai One Kai Baby Carrier Mesh Color: Silver Gray ◆Features This is the top-of-the-line model from BabyBjorn, Harmony. It's a popular and standard product. The mesh fabric is breathable, so you can use it regardless of the season. ・Age Range Approximately 0 months to approximately 36 months (approximately 3.2kg to 15kg) Height 53cm to 100cm Due to the item being used, returns and claims are not accepted. If you have any questions, please feel free to ask.