Some things you just have to experience to understand. This is one of them. The beaded design of this probe means that every movement registers differently than a smooth toy, and that distinction matters more than you might expect until you actually feel it. Each graduated bead creates its own moment of sensation, building on the last, so the experience has texture and rhythm rather than just pressure.It runs 10 vibration and pulsation functions, which sounds like marketing until you realize how differently your body responds to each one. You dial in the speed and pattern that works for you, and you can change it mid-session without breaking your focus. The silicone is soft and body-safe, which means it warms to you quickly. It is fully waterproof, so the shower is a completely legitimate option. At 4.25 inches in length and 1.5 inches wide, it is sized to be approachable without being underwhelming.Prostate stimulation is one of the most consistently overlooked sources of intense male pleasure, and the men who figure that out tend not to look back. This is a well-built, thoughtfully designed toy at a price that makes the decision easy. If you have been curious, this is a smart place to start.Overall Length: 4.25 inches (10.75 cm)Width: 1.5 inches (3.75 cm)Vibration Functions: 10 functions of vibration, pulsation, and escalationMaterial: SiliconeWaterproof: Yes