Ear Cozies -ear muffs for helmets
These really warm ear cozies (ear muffs for helmets) are designed to fit easily inside your Sawako helmet or many other helmets. Reassuringly thick, with a mesh outer for breath-ability and a fleece inner for added warmth. Simply slide them through your helmet's chin strap and fix between your ears and helmet.
With these clever additions, you can keep biking during the cold season.