All the best ideas happen on road trips. The Rumpl founders were sleeping in a van in California when they had their best idea; waking up in sub-zero temperatures will certainly inspire you to find a better way to warm up. Thus, the sleeping bag blanket (the first Rumpl product) was born — and the rest is history. Rumpl is a member of 1% For The Planet, meaning they contribute at least one percent of their annual sales to environmental causes. Their pick? The US National Park Foundation.