Why new born babies are wrapped in a blanket coated with a shiny aluminium?

Newborn babies are often wrapped in a shiny aluminum-coated blanket, known as a thermal blanket or foil blanket, to help maintain their body temperature. These blankets reflect body heat and provide warmth, which is crucial for newborns who can easily lose heat due to their small size and high surface area to volume ratio. The shiny surface also helps in retaining warmth, ensuring that the baby stays stable and comfortable in the critical early moments after birth.