Hi MissM are you after a booster or a seat for a younger baby? Turn a Tots don't go to booster, actually I'm not sure they're even being manufactured any more. There may still be some around in stores though. If you're after a convertible seat for the 0-4 age group then the Infa Secure Neons are made for smaller cars. They are both sort in the shell hight and narrow to fit 3 across in some cars. The Neon is the base model, with the Kompressor range being variations. They have extra padding for newborns and more fabric choices/colours ets. The SafenSound Compaqs are a smaller seat also for 0-4yrs.