That's what the go ...

I was looking for a child seat for our vacation.
If you also like to take a child seat to the stroller, this must be paid extra.
In the selection was an inflatable child seat, a booster seat more, and the Trunki.
After our vacation I can absolutely recommend the seat.

General:
The seat is made of a hard shell, has belt guides and can also be used as a backpack.
The toys of our child we could super store here.
In the plane as hand luggage and then used as a booster seat.
There is a belt guide that makes it possible to adjust the strap to the size of the child so that it is passed directly over his shoulder and does not rub on the neck at the back (of simple sturdy fabric). The belt guide is adjustable in height.
Attached to the side belt guides 2 hard plastic, the similar the belt like a normal child seat of Romans lead.

Safety / comfort:
Whoever etc. a child seat with side impact protection, headrest would like to have is wrong here.
The child seat is no one I would use every day in our car because that is, in my view the only downside, should the child fall asleep, it is not protected by the side impact protection of a burlap seat.
Who uses anyway only a booster seat in the car, has here with the backpack an additional "feature".

Price / performance ratio:
Child seat with you on holiday: min. 50
Rental fee for a car hire: min. 5 per day
Here the child seat has been already paid vacation in 2 weeks.