Waterproof means nothing if your sweat has nowhere to go. eVent® fabrics let sweat out up to twice as fast as common breathable/waterproof fabrics and are therefore trusted by people who often find themselves in the most extreme weather conditions on the planet, the sort of people who trust Rab clothing.
eVent® fabrics get their unique properties from a proprietary and patented waterproof membrane. The unique composition allows millions of tiny pores to breathe at their full potential. Sweat vents directly to the outside of the fabric in one easy step. We call this Direct Venting™ Technology. Its genius is hidden in its simplicity. eVent® fabrics simply let the sweat out.™
Most common waterproof/breathable technologies do not literally 'breathe'. Instead they move sweat in two slow steps by a process of diffusion through a Polyurethane (PU) layer. First sweat is condensed and absorbed into the PU layer on the inside of the fabric. Because PU absorbs and retains sweat, the inside of the fabric becomes wet. Then, body heat begins to push that dampness through to the outside of the fabric where it can finally evaporate - a very inefficient process.
We could mention the exceptionally low "Water Vapour Resistance" (RET) of eVent® fabrics. Or, we could talk about how much higher our 'Moisture Vapour Transmission Rates' (MVTR) are in laboratory tests. But, do you run in the lab? Do you ice climb inside a climate chamber? The bottom line is decided on the mountain. Out there it's a black and white world: you're either wet or dry. You either soak in your own sweat, or you don't. It's that simple. eVent® fabrics let the sweat out.™
All Rab eVent® clothing protects you from the wind, and provides you with sweat-free comfort through the unique Direct Venting™ Technology. Patented surface treatments and fabrication methods keep out water - even hard-driving rains - without blocking those millions of tiny pores that let the sweat out.™
But don't take our word for it...
"...without doubt eVent is the most breathable membrane"
Outdoor magazine, Germany
"eVent fabric is the most breathable waterproof material we've ever worn."
Backpacker magazine, USA
"The three-layer eVent fabric was the most breathable on test."
Country Walking magazine, UK
