The extra soft insert reduces the space between the child and the edges of the car seat, making it even more comfortable for the child. It is suitable for ECE R44 car seats with fixed safety harnesses for children weighing 9 kg or more, and for ECE R129 (i-Size) car seats with fixed safety harnesses of at least 60 cm in length for rear-facing or fixed safety harnesses of at least 76 cm in length for forward-facing. The insert does not replace the newborn insert and must not be used in car seats.