Professional Stamina Trainer. Vibrating Penis Strength Exerciser with adjustable buckle, fit for all sizes. The trainer comes with 12 vibration modes, each one vibrates in a unique pattern, providing your cock different training intensities and sensations. This fully waterproof penis vibrator not only allows you to enjoy sexual pleasure in the room, but also allows you to enjoy immersible fun in the bathtub, providing you with a vibe where you can release your sexual desire anytime, anywhere. Its flexible design is suitable for most cock's sizes. You can experience solo pleasure or enjoy shared fun by discovering more uses. Made from high-quality silicone, which is soft and smooth to the touch, ensuring a more comfortable sexual experience. One Year Warranty.