We dare you to try Doc Johnson's newest release. In fact, We Double Dong dare you! Go deep with Doc Johnson's longest Double Dong yet. At 18 inches you'll reach your pleasurable limits. Pink or Clear, front or rear; the Double Dong is made with Sil-A-Gel formulated Jelly. The Crystal Jellies Double Dong is 100% Made in the USA using our exclusive anti-bacterial rubber. 18" in length. 1.75" wide.