Marmot Mountain Hardshells - Introduction

First, whether we like it or not, we’re going to have to discuss some technology so we can compare the options. I promise there won’t be any math, but it is worth understanding what you’re paying for!

Most importantly, these rain jackets are breathable. This means that they allow water vapor from your body to pass through into the outside air, while simultaneously preventing external rain or moisture from penetrating the jacket. This task is critical for staying comfortable and dry, and the different technologies perform it with varying efficiency. Despite this breathable quality, all of these options remain 100% windproof.

The primary factor here, then, is this breathability; if you’ve ever tried to hike in one of those cheesy vinyl “packable rain jackets,” you’ll appreciate how important vapor transfer is when selecting foul-weather wear. Without breathability, a few moments of exertion will make the inside of the jacket just as wet — from sweat — as the outside of the jacket! The more breathable a jacket is, the faster it can transmit water vapor to the exterior environment.

First, whether we like it or not, we’re going to have to discuss some technology so we can compare the options. I promise there won’t be any math, but it is worth understanding what you’re paying for!

Most importantly, these rain jackets are breathable. This means that they allow water vapor from your body to pass through into the outside air, while simultaneously preventing external rain or moisture from penetrating the jacket. This task is critical for staying comfortable and dry, and the different technologies perform it with varying efficiency. Despite this breathable quality, all of these options remain 100% windproof.