Product Description Get him in top condition! Vacuum pump that provides effective penis and potency training with successful results that are permanent. Transparent vacuum cylinder 20 cm long, insertion depth 18.4 cm, inner O 5.3 cm, outer O 5.5-5.8 cm. O of sleeve opening 2.5 cm (flexible). handy pump ball with a safety pressure valve. Abs, PVC, TPE, San. Directions Put the pump over your penis and start pumping. This creates a vacuum which results in an increased blood flow and an erection. Safety Warning Once you penis is errected, please remove the pump to avoid injuries. Box Contains 1 piece See more