The Royal Intruder is 3 1/2" in total length, 3" insertable, and 1 1/4" in diameter at the widest points of its shaft. It features a unique design that may, unfortunately, make this particular plug difficult for some users to wear. To elaborate: The first 2/3 of the toy is a teardrop shaped head. It begins in a rounded point, widens to the full 1 1/4" width, before diminishing into a 7/8" neck. That first 2/3 is pure bliss. Wonderful for easy, gradual insertion as the wearer becomes accustomed to the Intruder's size. The last 1/3 of the toy is where you may encounter trouble. After that first dip, the Intruder blossoms out to another 1 1/4" bulb, which happens to be rather close to the base of the toy. It dips into the last, and final, 7/8" neck before widening into a 1 1/2" base. The design flaw here is that the second bulb is so close in proximity to the base, without enough of a neck in between, that the plug tends to pop out. Often it will slip back to that first little dip after the teardrop top, and sometimes wiggle its entire length out altogether. If there had been a bit more space between the second bulge and the base, it would make this plug worlds easier to wear. That said, the size and softly tapered head make this an excellent choice for a beginner. You just may want to consider keeping your Royal ass at home when wearing this toy, rather than risk dropping & shattering an otherwise lovely piece of glass.