Eskimo-approved, the trapper-style hat is the coziest of all. And whether you take the posh or the affordable route, one thing’s for sure: You’ll stay downright toasty. From top: Dolce & Gabbana's fox fur trapper hat, $3,895, at Dolce & Gabbana stores, 877.70.DGUSA, dolcegabbana.it. ; Tory Burch’s rabbit fur hat, $495, at toryburch.com; J. Crew’s shearling hat, $195, at J. Crew, jcrew.com.