Earlier quoted context omitted.
This is what makes ShakeDry so revolutionary. The nonsense brands have been saying about waterproof and breathable is actually real. I’ve done 30 mile runs in the pouring rain w/ my ShakeDry jacket and come out “dry” at the end. The material never wets through. The only downside for me is that it does wear “warm” so I mostly wear it in under 45F degree weather — which coincides nicely with Portland’s rainiest weather…
So your sweat is able to evaporate through the membrane leaving you dry? This is the biggest issue I’ve had with so called “breathable” membranes. (I assume you still sweat in < 45F weather because I still sweat even in freezing temperatures when running, depending on other conditions, etc)
Overall though for cold (32-45F) and rainy weather like we get a lot in the PNW, it’s an amazing fabric.