Its fleecy look may give the impression, but the fabric is as much or more breathable than the PhysioCarrier. Related articles What is the purpose of the "Sit here" label on my baby carrier? What is the purpose of the PhysioCarrier baby back pocket? How do I carry my baby on my side in a baby carrier? What are the booster seats and neck pillow used for? Does the HoodieCarrier keep you warm?