The Absolute Intimate Penis Extender is made from silicone and the bars that run along the shaft are made of nickel and are covered by a 24k gold plating to prevent allergic reaction or irritation, and a specially designed ring of plastic made from POM (Polyoxymethylene). These bars are fully adjustable, as you gain size all you have to do is to turn them to increase the stretching, or the traction force.