Juke vibrates the penis loop elasticity, can enhance men's hardness and persistence, extend the intimate time of the partner; on the other hand, it will bring an unforgettable excitement experience for wearer and partners! Made of soft and safe silicone. 100% waterproof design, rest assured in the water and clean. Ultra-lightweight material. Texture increases irritation. Telescopic elastic material is suitable for any size. There are 6 vibration strength and 4 vibration modes.