We ordered the pad in size 2, as our baby weighed just six kilos. Nevertheless, the head was right on the mattress, which was very annoyed. For that you need to re-order the same filling material at the "launch weight", can somehow not be the intention. But then we topped necessity, and the head is no longer initially on the mattress on - after a little while but then, because the cushion just does not stay stable. We are not satisfied.