Popular Model/Series: BabyBjorn Baby Carrier ONE KAI Air Color: Black Used for about 8 months. I mainly used a stroller, so it was only used a few times. After that, it was stored at home. There are a few pills. There is some wear and tear, so please purchase if you understand. The original box, instruction manual, catalog, etc., are all included. *The box may be flattened for shipping due to size constraints. If you wish, I will include the drool cover I used, so please let me know in the comments section. Type...Carrier Popular Model/Series...BabyBjorn Baby Carrier ONE KAI Air