Experiment with slippery, messy, ass-filling fun with the Flow Fill silicone anal douche accessory, only available in the Kink by Doc Johnson collection. Flow Fill is crafted in the shape of a traditional tapered-tip butt plug with a hollow center intended for liquid play; just attach it to the anal douche bulb or shower hose adapter (sold separately) to completely fill that hole with lube, water, or other liquids of your choosing. Total Length: 4″. Insertable Length: 3.75″. Width: 2″.