What is Seat weight kg?

Seat weight kg is the weight of the seat itself in kilograms, given separately from how much child weight it allows. It tells you how a seat feels to carry, lift into a car and swap between two vehicles, and a heavier shell often corresponds to more structure and higher rear-facing limits. Baby Plus and Britax both list a seat weight of 12.7 and 12.7, while Baby Jogger lists 8.2. Weight is only one factor, so weigh it against install, fit and price rather than picking the lightest seat.