Aneros Peridise Stimulator, Beginners
The thoughtful design of the unisex Peridise allows for easy introduction, comfortable use, and a freedom of movement for an experience like no other. By stimulating a peristaltic response, it generates a regional orgasmic response that can stand alone or enhance a traditional orgasm.  The Beginner Set contains two of the larger devices (22mm and 18mm) and the Advanced Set contains two of the smaller devices (20mm and 16mm). As your skill and strength advances, you should move down in diameter. The smaller the device, the more exquisite the pleasure.