There are several types of collecting apparatus, but the general design uses a tube with a normally sterile inner liner and hard outer shell.
The walls of the tube may be hollow and filled with warm water to mimic a natural body temperature for better results, and may contain a filter to separate the semen.
The sleeve, or as it is also called "vaginal tunnel", measures in average from 10 to 20 centimetres (4 to 8 inches) and can have an open end for inserting a vibrating bullet, if the user wishes.
For marketing purposes, many manufacturers design the vagina like an exact replica of some famous pornographic actress' vulvas.
For more intensive sensations there are a variety of functions: vibrating, pulsating, surging, rotating, multi-speed, etc.Vibrating bullets are usually controlled by a panel connected by a wire.
Some kinds of vibrating artificial vagina are designed effect, replicating the role of a penis pump—with a bulb squeezed by the user.
In prison slang, a "fifi" refers to an artificial vagina usually made by rolling a trash bag or condom inside of a towel, and using some sort of lubricant such as hand lotion.
This is less of a concern with artificial vaginas made from silicone, which, while generally more expensive, is non-porous and can be disinfected after cleaning with a bleach solution or heat.