Patagonia H2NO Performance Standard
Patagonia H2NO Performance Standard is Patagonia's benchmark for waterproofness, breathability and durability, which ensures a high level of long-term performance backed by Patagonia's Iron Clad Guarantee. H2NO Performance Standard products undergo the most rigorous testing in the industry.
Patagonia test a fabric’s waterproofness in three ways: they simulate light rain, prolonged rain, and finally they force water through the face of a fabric. They test breathability by measuring a fabric’s Moisture Vapor Transmission Rate (MVTR). And they test durability by subjecting fabrics to a “Killer Wash.”
Killer Wash is Patagonia's proprietary wet flex test that simulates years of use in drenching conditions. The H2NO performance standard for shell garments is 20,000 mm before and 10,000 mm after the Patagonia Killer Wash test. Patagonia also send their ambassadors and testers into the field to punish the garments in every possible condition to expose any potential weakness in materials or construction. Patagonia reject any garment that does not pass the tests, regardless of fabric supplier. Whether it's a bomber 3-layer alpine shell or a paired-down rainwear piece, the same rules apply.
2-layer H2No® Performance Standard shell fabrics are completely waterproof, windproof and breathable. They combine a water-repellent shell fabric with a waterproof/breathable membrane. They also have an internal Taffeta or mesh lining for increased durability and next-to-skin comfort.
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/breathable membrane and protective top coat barrier designed to allow the garment to be constructed without the need for an internal lining fabric. A distinctive raised print layer is applied for decreased surface tension and increased moisture management.
3-layer H2No® Performance Standard fabrics are waterproof, windproof and breathable by virtue of an advanced combination of elements: a water-repellent shell fabric, a waterproof/breathable membrane, and an ultralight knit backer. The entire fabric package is highly packable, comfortable next-to-skin, and built to withstand long term exposure in extreme environments.