Hello,
I have this lovely portable baby carrier than you can use for a baby from 2 kg ~ 13 kg. I would really like to get ¥5,000 for it. Simply strap it into your car using the car seatbelts. This portable carrier has an airbag and its own seatbelts. When you put it on the floor, you can use it as a high chair to feed your baby. Immaculate condition as you would expect for a baby. It comes with a very soft brown velour blanket (that is included in the price). I will bring it you by train. Tons of photos available.