We think cold brew is the easiest way possible to make coffee when you're away from your home, so we built Rumble Go to meet that need. Outside Magazine explained it really well in their write-up: "In the morning, your cold-brew coffee is ready to drink the moment you get out of bed or your sleeping bag, so you don’t have to fumble around to boil water." Read more in this article about why cold brew is the best way to make coffee outside your home.