A thermal protection (1) to wrap, at least in part, a newborn baby 10 with the protection, where: - the protection (1) comprises a first layer (3) and a second layer (4) both of transparent material , where said layers (3, 4) are joined so that there is at least one air chamber (5) between the layers (3, 4), and characterized in that - the mutual arrangement of the first and second layers (3 , 4) allows, when thermal protection (1) is used, that the chamber (5) is deformable to the point necessary to establish an acoustic contact between the baby's skin and an acoustic transducer (11) placed on a surface external thermal protection (1), - the air chamber (5) is hermetic and the acoustic contact can be established over an area of at least 1 cm2, or - there is at least one open passage (13) from the outside and inward of each of the air chambers (5) between the first and second layers (3, 4 ), and the adaptability of the first layer (3) is greater than the adaptability of the second layer (4) so that when a baby is placed in the protection (1), the first layer (3) remains attached around the baby while the second layer (4) is deformed to a lesser extent than the first layer (3) so that the outside air flows into the air chamber (5) through the open passage (13) .Una protección térmica (1) para envolver, al menos en parte, a un bebé recién nacido 10 con la protección, donde: - la protección (1) comprende una primera capa (3) y una segunda capa (4) ambas de material transparente, donde dichas capas (3, 4) están unidas de modo que al menos exista una cámara de aire (5) entre las capas (3, 4), y caracterizada por que - la disposición mutua de la primera y la segunda capa (3, 4) permite, cuando se utiliza la protección térmica (1), que la o las cámaras (5) sean deformables hasta el punto necesario para establecer un contacto acústico entre la piel del bebé y un transductor acústico (11) colocado en una superficie exterior de la protección térmica (1), - la o las cámaras de
