The main downside to convertible car seats are that they are usually heavier and
bulkier than infant car seats, and are generally not portable nor can they be used as a carrier.
Not exact matches
In order to accommodate an
infant seat, the frame of a travel system stroller tends to be
bulkier than a regular stroller.
This stroller is fairly
bulky in comparison to others available on the market, but this comes with a luxurious amount of space within the stroller for the kids, it would no doubt feel less «claustrophobic» for the
infants than other similar products.
The seat itself is a little
bulkier than most
infant car seats.
Though it is designed to offer extra leg room for front seat passengers, it may still be
bulkier than most
infant seats in the rear - facing position, therefore might not fit well in compact cars.