We needed a jacket for going up. Something to keep you comfortable while you’re walking uphill, no matter what kind of crazy mountain weather is happening. So we made the Up Jack. 

It cuts the wind, sheds moisture, and breaths like you’re wearing nothing at all. The soft, airy texture of our Japanese nylon never feels clammy, and has just enough stretch to flex to your every movement. You won't find a more comfortable solution for your uphill alpine adventures, nor will you find a jacket that you want to wear more.