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Technology · Patagonia

H2No Performance Standard

H2No is a testing standard rather than a single membrane. Patagonia specifies laminates from several suppliers and holds them to its own wet and wash cycle protocol.

Specifications last verified 2026-09-01Independent documentation

Manufacturer specification

Published figures only — nothing estimated

Owner
Patagonia
Membrane type
In-house specified waterproof/breathable laminates
Construction options
2L, 2.5L, 3L
Waterproof rating
Not publicly specified by manufacturer
Breathability rating
Not publicly specified by manufacturer
Air permeability
Not publicly specified by manufacturer
Typical price segment
Varies by garment.
Weight characteristics
Varies by face fabric and construction rather than by membrane alone.
Durability characteristics
Durability is driven mainly by face-fabric denier and construction.
DWR requirements
Face fabrics carry a durable water repellent finish. Repellency wears off with use and needs reproofing; the membrane itself is unaffected.
PFAS / PFC information
Check the current season's material declaration. Many brands have moved to PFAS-free repellent finishes, and platforms differ by year and by garment.

WaterproofJacket.com assessment

Our editorial analysis, not a manufacturer claim

Main advantages

  • Recycled face fabrics across much of the range
  • Consistent internal durability testing standard
  • Strong repair and warranty support

Main disadvantages

  • Because it covers several laminates, one H2No garment does not perform like another
  • Numeric ratings are generally not published per garment

Best uses

  • Hiking
  • Travel
  • Everyday rain

Poor uses

  • Direct numeric comparison against rated fabrics

Care instructions

  • Wash with a technical cleaner, not standard detergent or fabric softener.
  • Reproof the face fabric when water stops beading.
  • Tumble dry warm or press with a cool iron under a cloth if the care label allows, to reactivate the finish.

Sources

Official documentation and standards we relied on