DWR (durable water repellent) fabric finish repels light rain and snow and decreases dry times. When DWR is used in conjunction with a waterproof/breathable barrier, the DWR finish keeps the outer fabric from becoming saturated, enabling the breathable barrier to do its job. Patagonia has long relied on a DWR with perfluorinated compound (PFC) but we have been searching diligently for an alternative because of its harmful environmental impacts.
For the past decade, we have evaluated commercial chemistries and chemistries in development and engaged partners that meet our best-in-class performance needs, are transparent in their business practices, willing to improve the status quo of specialty chemistry sourcing and provide traceable supply chains when necessary. And for the Fall 2019 season, we are pleased to introduce our first products that use PFC-free chemistries. These products have been lab- and field-tested to meet our rigorous performance standards, with many more to follow.