The Prowler weighted butt plug range is a heavy-duty range of plugs for beginners and experts to use and enjoy. Made from ABS Plastic, these plugs start with a small beginner 3.5b size, working up to a medium intermediate 4.5b size and then onto a large expert 5b size. What makes these butt plugs unique is the carbon steel ball inside the bulb, which will rock and wobble when using it, bringing intense sensations as you push in and out.