Combination of the latest technology and the best materials for the highest masturbation pleasure!- Strong edition - solid material for more stimulation- elaborate internal structure- 4 different stimulation areas- individual vacuum stimulation through external pressure pad - flip-open design - super easy cleaningthanks to advanced casting technology, an elaborate internal structure with 4 different stimulation areas was created: while the glans is pampered by a small massage ball, countless nubs, grooves and waves stimulate the shaft. by means of the external pressure surface on the cylinder, the internal pressure can be further strengthened, and at the same time, air can escape through the internal one-way valve, which creates a strong suction effect.and the best: flip-open design with seamless finish won't let a drop of lube seep through! Even the subsequent cleaning is fun: simply unfold the toy, rinse under running water, and then let the flip zero dry stretched over the sliding arms that serve as a stand.