Patagonia’s proprietary durable water repellent fabric finish, Deluge® DWR, lasts substantially longer than standard DWRs. Garments with the Deluge DWR finish have like-new repellency after years of extensive use.

Because Deluge DWR is so effective at repelling light rain and snow, we can forego the use of a waterproof barrier on Patagonia soft shells thus improving breathability tremendously.

When used on Patagonia hard shells, in conjunction with a waterproof/breathable barrier, the Deluge DWR finish keeps the outer fabric from becoming saturated so that the breathable barrier can do its job.