HyVent™ Fabrics
HyVent™: A superior, waterproof, breathable technology utilizing a polyurethane (PU) coating that consists of a tri-component mutli-layer formula for waterproof protection, moisture permeability and durability. This technology has been lab tested in The North Face® Quality Assurance lab to ensure the best possible durability and function while also maintaining a comfortable level of breathability. The minimum level of breathability achieved using HyVent® is: 600 g/m˛/24 hours on the Moisture Vapor Transfer Rate scale.

To test the level of waterproofness, we subjected HyVent™ garments to 20 wash cycles, where garments retained an average of more than 60 PSI on the waterproofing Mullens Test.

In addition to lab testing, HyVent™ garments have also been heavily field-tested. The North Face athlete Rick Armstrong, a skier and mountaineer who has many first descents, said, "This technology keeps me out in the storms, catching the best snow long after most people have gone inside. It’s just as good-if not better-than anything else on the market."