The phrase "to keep baby comfortable" means making sure that the baby feels content and happy by providing them with everything they need to feel safe, relaxed, and at ease. Full definition
It is built with a number of safety features while keeping your baby comfortable at the same time. (babyseats.reviews)
Two exterior insulated bottle pockets keep milk cool (or warm), and a memory foam pad is included to help keep your baby comfortable during on - the - go diapers changes. (babycenter.com)
The weather cover keeps your baby comfortable in all conditions. (earlymomentsmatter.org)