The Vibra Plug's inner weight rolls with your movement to stimulate muscles and add sensation! The Ultrasilk Silicone, with its silky smooth feel, warms with your body heat beautifully. Your motions propel a ball bearing inside this smooth silicone with a comfortable anchor base plug perfect for adding new sensations during anal play. This plug has a 3.5 inch length (3 inch insertable) and a 1.75 inch width. Made with body-safe silicone, this plug contains no phthalates, paraffins, or latex. 3.5 Inch Length (3 Inch Insertable) x 1.75 Inch Width Emits Vibrations via Movement of an Inner Bearing Tapered Design for Easy Insertion, Slim Anchor Base for Comfort Does Not Require Batteries Made from Satin Smooth, Body Safe Silicone. Contains no Fragrances, Phthalates, Paraffins or Latex.