Combo Scarf uses combo technology from Seirus Innovation and Polartec "Neofleece"</br>Neofleece is a patented design created to be the warmest insulation on Earth</br>Neofleece uses a five layer defense to keep you warm: tough outer shell?? DryHand waterproof/breathable liner?? Neofleece (fleece lined neoprene)??