Tantus Vibrating Progressive Beads are brilliantly designed to help you feel the heights of anal pleasure. A series of four beads increase gently in size from .75 inch to 1.75 inches and are perfectly spaced for pacing yourself. Each time a bead is pulled out sphincter muscles contract automatically and help to build up momentum for orgasm with an additional removable 3 speed waterproof vibrator to help push you over the edge. The smooth easy entry beads flex with the body's curves and end with an anchor base that tapers slightly for a flawless fit between the cheeks. Vibrator: 3 speed removable waterproof original bullet. Safe for your body made from Tantus own unique formula of 100% ultra-premium Silicone. Easy to clean: eco-friendly hypoallergenic hygienic boilable bleachable and dishwasher safe. Diameter 1st bead .75 inch 2nd bead 1 inch 3rd bead 1.25 inches 4th bead 1.4 inches. Base .9 inch. Dividers .25 inch. Insertable length 11 inches.