True to its name, a double-sided dildo allows you to have twice the fun and sexual adventures. Why? It's because it's longer than a regular dia and has two penis-like attachments on either side.Double dildos are primarily used to allow two people to have simultaneous pleasure. This sex toy can also be used for double penetration. COEDStore has double-ended dildos, also known as double dongs, in various colors and textures to suit your sexual needs.