Get ready for thick, throbbing erections at the push of a button! This Classix Auto-Vac Power Pump features an automatic motor that powerfully increases girth and length. The ultra-elastic elite silicone donut provides a comfortable, airtight seal as it snugly wraps around your shaft. With just a push of a button, your penis is stimulated to achieve a long-lasting, rock-hard erection through vacuum suction.