Soft against young skin these merino wool thermal baby long johns are the perfect way to keep warm and cosy this winter 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 flatlock