Your Puffy Coat Is Too Puffy

Mass-market brands and high-end designers alike are boosting the fill of our winter coats for fall, to varying degrees of success

AT SOME POINT every winter, on one of those 20-degree mornings here in New York, I envy George Costanza. To be more exact, I envy one particular coat worn by the “Seinfeld” grump (I’ll keep my full head of hair, thank you very much). In “The Dinner Party,” an episode in the sitcom’s fifth season, Jason Alexander’s curmudgeonly character waddles into Jerry’s apartment in a poofy black Gore-Tex jacket. Elaine (Julia Louis-Dreyfus) calls him “bubble boy,” yet George is unperturbed. It’s cold, and his feathery cocoon is toasty. “You wish you had this coat!” he spits back. And I must admit, I do.

Well,...