Enjoy self-pleasure anytime with tenga eggs. Crack open the egg-shaped casing and you will find a soft, white EGG. You may even wonder to yourself if the object in your hand is really a male pleasure aid! However, the super stretchable elastomer can drastically expand for a snug fit regardless of your size. A surprise to open and a pleasure to use! THUNDER is part of the hard gel series. With firm lighting shaped ribs all along the walls, this egg will provide a strong and sharp sensation. However, the true secret of Thunder peaks is revealed not by stroking up and down but by twisting the head for the full effect of this thunderous sensations.