1. Material: Brass pump and acrylic pussy cup 2. Negative pressure for pump can be up 635mmHg Pump up the passion and watch your pussy swell with pleasure. With each squeeze of the hand vacuum pump, the high-intensity super suction stimulates your labia and vulva. Flared and molded to fit over your pussy, this is just what you have been looking for to achieve full, beautiful lips. Ergonomically correct cup shape with quick release valve. Removable no kink hose and sturdy quick release valve.