JoyDivision Wave Anal Beads - ShortThis Anal bead has five spheres that graduate in size from the narrow tip to the retrieval loop at the base. Each one is distinctly felt as it passes through, with a clear pause between each before the next. It is made from Silikomed, a smooth, slightly yielding material that moves with the body. The total insertable length is 17. 5 cm. A firm retrieval loop sits at the base and gives enough grip to control the pace and timing of withdrawal precisely.