Tenga Flex Rocky Black MasturbatorVacuum effect masturbator Stimulus structured pleasure channel Easy to clean All round masturbator with a vacuum! Reusable masturbator with integrated drying stand. Pleasurable inner structure with many different grooves and nubs, which works on the penis almost exactly like a womans vaginal muscles. In addition, the outer shell rotates for additional stimulation and gives unique sensations. The air hole on the bottom can be closed with a finger and