Alps Outdoorz Big Bear Lumbar Pack - The Big Bear is our most modular pack yet - it can be used as a fanny pack, day pack, or both! The fanny pack has a large extendable day pack that expands out of the fanny pack to give you an additional 1,900 cubic inches of space. Fanny pack capacity: 800 ciDay pack capacity: 1900 ciTotal capacity: 1900 ciWeight: 2 lb 5 oz