Why is this car seat advertised as a 360 as doesn\’t fit the 360 base as I found out when buying the carseat then bought the 360 base and doest fit had to buy another carseat due to being advertised incorrectly

Hi Christina, the Maxi-Cosi Pebble 360 can be used as a rotative baby car seat in combination with the FamilyFix 360 base (sold separately). Our FamilyFix 360 base is equipped with ISOFIX connectors and a support leg to provide the safest, easiest and quickest way of installing your car seat. Have you accidentally bought the Maxi Cosi FamilyFix 360 Pro Base with SlideTech? This base is only compatible with the Pebble 360 Pro and Pearl 360 Pro. Hope that helps