Leviathan Giant Silicone Inflatable Dildo - BlackPlaything will be ultimately challenged with the length and girth as it stands let alone once it is inflated. Semi realistic bumps and ridges are added for stimulation. Lube will be necessary as will patience. Once inserted Leviathan can be inflated to a fuller size by pumping the attached bulb. To deflate simply turn the knob at the base of the pump. Uninflated: 13. 5 inches in total length 2. 86 inches in diameter Inflated: 14. 5 inches in length 3.