“The best rule of thumb is ... Once clean, you can choose to reapply a DWR coating. Allen says to do this if the item has lost the ability to bead water, or once every three to five wash ...
The best puffer jackets come loaded with features ... The exterior is made from 100% recycled polyester ripstop with a DWR finish, so it’s windproof and water-repellent against rain, sleet ...