When Rab Carrington, back from an expedition to Patagonia in the late 1970s, began shutting himself away more and more in the attic of his house in Sheffield, he had just one goal: to make a down sleeping bag that would serve well in the mountains. After decades of mountain experience and experiments with new materials, the philosophy of the brand bearing its founder's first name remains the same: make simple, functional gear you'd rather repair than throw away.