Belt installation only, no isofix. Very easy to install in car, easy to adjust headrest as child grows and handy drinks holders at the sides. My son loves it and is comfortable and safe in it. Very good price too.
This is my second britax romer seat as my youngest grew out of his other. We have the same seat for my older child who is now 8 and fits perfectly in it. This seat is perfect for long journeys as it supports the child’s head so they can sleep without their heads falling forward. It’s easily removed and the seatbelt just fits over. Oh and it fits their drinks bottle :)