This Anal Silicone Jiggler is ideal for those who are starting out in anal play and want to ease their way in (no pun intended). The jiggler is designed using 5 balls that gradually grow in size from .31" in diameter to 1.35" in diameter. The jiggler itself measures 7" in length. It's made of a comfortable silicone material, which makes it anti-bacterial and non-toxic.