Size Matters Vaginal Pump. Experience new levels of titillation! With the Size Matters Vaginal Pump Kit, both you and your partner will enjoy the erotic sensations and inviting looks of your newly pumped up pussy. Fit the ergonomic cylinder over your vagina and you or your lover can squeeze the medicine ball style pump to create suction against your most intimate areas. Sensitivity is heightened as your labia enlarges for the ultimate in lovemaking pleasure! The quick release valve and no kink hose make this easy to use for beginners and experts alike. Please note vaginal pump does not vibrate.