The Fat Bag for the Viking Inspection port is a great option for storing items while sailing. Made of a sturdy nylon material, the Fat Bag fits into the appropriately sized Viking inspection port without ruining the watertight seal of the port. Large enough to fit a spray top, bottle of water, or other similarly sized items. Comes in three diameters: 4 in., 5 in. and 6 in. - this measurement is taken by obtaining the diameter of the threaded portion from the inspection port's lid.
NOTE: The Fat Bag and Cat Bag are NOT waterproof, and may not be appropriate for items susceptible to water damage.