【Perfectly Fitted, Hands-Free】The nipple stimulation toys vibrator are a good size, not too big and not too small, perfect for just about any nipple. Firm, velvety silicone scoops lend a tight seal, simply press the cup portion firmly over a nipple to activate suction. Unlike some similar toys, these hold tight and ultra secure- they'll stay precisely in place while soft tickers inside buzz along single speed vibration. You can completely free your hands.