With the adoption of a flexible body, you are free to enjoy 360 degree sensations at the tip of your shaft! Interchange between back-and-forth, right-and-left, and rolling motions for a completely unique experience! To create a strong internal vacuum, simply remove the sticker at the top of the cup before use and cover with your finger while using. Cup features the smooth pad insertion mechanism! This mechanism not only offers extra adherence, air-tightness and less lubricant leakage, but will automatically apply lubricant to your shaft as you insert!