Soft against the skin these blue thermal long johns are the perfect way to keep your newborn baby warm and cosy this winter merino wool is a natural way to regulate body temperature as it breathes wicking moisture away from the skin keeping baby happy warm and dry wool retains body heat even when wet perfect as a first layer in colder weather loops in the fabric allow air to circulate 100 merino wool makes the garment strong and durable adjustable drawstring waist