When you’re out in nature for extended periods of time, or even decide to brave the conditions after a less than favorable weather forecast, a good set of rain pants is pretty much essential.

Like the US postal service, we winter runners must endure snow, rain, and gloom of the early night. As such, we require gear that’s up to the task. Clothes matter for outdoor runners.

And with all the products out there marketed as rain gear, what is the best for your situation? I talked with Matt Dwyer, head of Product Impact and Innovation at Patagonia who also spent years ...