Designed by a Doctor, it's a complete kit that perfectly copies a man's own penis in super realistic rubber. Each kit comes with easy to follow instructions and includes everything necessary to produce an EXACT rubber copy of any penis! Your finished dildo is made from a proprietary skin-like substance that is not latex or silicone, but a completely safe, non porous rubber material that is hypoallergenic & non-toxic. It's currently being used throughout Hollywood to create incredibly lifelike masks & special effects. Unlike silicone, it WILL NOT break down when used with water-based OR silicone-based lubricants.All standard kits include a 5 1/4 inch vibrator that uses 1 AA battery.