12.2oz. Light, innovative, exceptionally compact, and pillow equipped! A smart pad that combines our comfort technologies with our weight saving innovations, the Inertia O Zone is light, compact and supportive. It weighs only 12.2 ounces, yet is fully loaded – integrated four-inch pillow, width to toss and turn, and our patent-pending Loft Pocket Technology that helps maximize your sleeping bag’s thermal effectiveness while minimizing the pad’s weight. Ideal for bike tours and ultralight backpacking, it’s comfortable, easy to inflate, and packs down to the size and weight of a can of soda.