Designed for pelvic biofeedback, it's the perfect shape for prostate pleasure. Easy to insert and position, and has a large contact surface for multiple sensation capabilities. This one is a little shorter but has a much thicker base.
It's 94mm (3.7 inches) in length, the tip is 18mm (3/4 inch) wide and the neck is 14mm (1/2 inch +) wide. For perspective, one picture is next to a standard #2 size pen.