This flexible beaded probe has a strong suction cup that sticks to any smooth, flat surface, to make solo play easy. The wide base also enhances the sense of security while using the anal plug. Because the beads at the base are bigger than the beads at the top, inserting the plug slowly into the anus, bead by bead, will induce amazing sensations. The top bead is 2 cm wide, the lowest bead is 4.7 cm in diameter. Made of PVC, easy to clean.