Big Stone weatherproof duffel bags are engineered to fit the demands of weekend and hardcore outdoor enthusiasts alike. Built to handle environmental extremes, the Big Stone duffles protect clothing, gear and valuables from the harshest of conditions. Big Stone duffels have been thoroughly tested to protect against rain, snow, dust and even odors. Every Big Stone duffel bag is constructed of a durable PVC exterior shell combined with a SCUBA style fully waterproof zipper and double stitched seams – delivering an unmatched performance bag for the field. Duffels are available in 40, 70, and 90-liter sizes – providing size options for any travel adventure, from a weekend getaway to a week-long mountain expedition. The lightweight, durable design can be shoulder slung, worn as a backpack or handheld from the heavy-duty grab handles, providing hands-full versatility.