The Malesation Bead Ring Set Pack of 2 gives you a ring that you can use for multiple purposes. It will give you a robust erection that will last for a long time as well. It is comfortable and flexible, and you can either wear the two rings together or separate from one another. Material: 100% silicone. Diameters 1.6" (4.0cm) and 1.8" (4.5cm).