Firm, vertical lightning edges provide a strong, sharp sensation. Feel the peaks and troughs of thunderous sensations as you stroke up and down, or twist around the head for the full effect of these large, defined ribs. The super stretchable elastomer concealed within each of these discreet EGGs expands drastically for a snug fit regardless of your size. The TENGA EGGs come in 6 different varieties each with different internal structures for a variety of great experiences. Great as a novelty gift and a perfect travel companion!