The When-to-Wash-It Handbook: Winter Edition - Real Simple
How often you should wash them: two times a season. Washing guidelines: Overwashing down causes the feathers to break, so twice a season is plenty. Machine wash puffy outerwear in cold water with a non-detergent product, like Nikwax Down Wash ($9.50, rei.com), since “detergents and dry cleaning flatten the feathers,” says Rachel Cerny, …