2.5-layer H2No Performance Standard shell fabrics are waterproof, windproof, breathable and highly packable. They combine a water-repellent shell fabric with a waterproof barrier and a raised pattern on the inside, instead of the interior scrim used in 3-layer fabrics. The raised pattern makes 2.5-layer fabric light and compressible, while still protecting the waterproof barrier.
Deluge DWR - 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.