Instruct: Classify Amazon reviews into positive or negative sentiment
Query: WARNING: Universal does not mean Universal

According to the manufacturer, this car seat carrier is NOT compatible with thousands of infant car seats on the market despite the clearly misleading name "Universal". I bought the top rated infant car seat by Britax and then this carrier based on the box which said compatible with Britax. After reviewing the instructions, I found it was not compatible with this and many other infant car seats.