The Mystim Tickleberry Finn urethral sound is long and pear-shaped. It is perfectly suited for the special stimulation of the penis. With a little practice, it can be easily inserted into the urethra and provides a sensation like you have never felt before. Made of aluminum and hand-polished, it can be heated on the stove or cooled in the refrigerator. The temperature is retained for a long time, ensuring fantastic sensations. The Mystim Tickleberry Finn urethral sound is designed for use with the Mystim Tension Lover Kit and offers comfortable electrical stimulation of the nerves. The gentle, tingling, rhythmic pulsing can be experienced for hours, along with variations and intensity increases for unexpected sensations.