3 In 1 Vibrating X-Tra Cock Penis System. Adam & Eve Cyberskin 3-in-1 Vibrating X-tra Cock increases your penis size during intercourse with this realistic penis extension system made of soft Cyberskin. This super stretchy sleeve can fit most sizes, giving you 3 inches of extra length. Pull the sleeve over your erect penis and add the cock ring with removable micro-stimulator for a harder and longer lasting erection. Leave the vibrator at the bottom for testicle stimulation, or place it at the top for clitoral stimulator. If you need to adjust the size simply cut the sleeve at the base of the shaft to your specifications. Requires 3 AG13 batteries button cell batteries, 6 included. Phthalate free, non-toxic materials: Cyberskin sleeve, ABS plastic bullet vibrator. Cock Penis Extension dimensions: 8.5 inches long by 1.5 inches wide. Sex toy weighs over a half a pound at 0.65 pound. Rings, Sleeves & Extensions. Extensions. Vibrators Battery Operated.