A pair of cooling ear muffs, for use by a user in cooling the head of the user. A pair of ear covers each have a shell and contain a reservoir for holding a chilled liquid. A sealing ring on each ear cover encircles the ear and a thermal membrane communicates heat from the ear to the reservoir. A connecting...http://www.google.fr/patents/US7335222?utm_source=gb-gplus-shareBrevet US7335222 - Cooling ear muffs
