Takata Lightweight Child Seat Lightweight (approx. 4.5kg) and compact (approx. 64cm high, 47cm wide, 57cm deep), making installation easier. It is secured with a 3-point seatbelt. ＜Main specifications from the manufacturer＞ Weight: 2.5 to 18kg Height: Approximately 45 to 105cm, with the back of the head not protruding from the backrest Age目安: Newborn to approximately 4 years old The instruction manual can be found on the manufacturer's website. This is a used item, so there may be stains, discoloration, pilling, scratches, etc., but it is still usable. I believe there are no particular "functional issues," but I am not a professional, so there may be oversights. Please refrain from bidding if you are concerned about the quality.