Smooth threaded tapered shapeRounded tip for easy insertionComfortable plug stays in placeFlared base for easy retrievalEasily warmed or cooledEmbedded rainbow jewel baseStorage bag includedNickel free aluminum alloyBody safe & phthalate freeAvailable in 3 sizes3" (76mm) Length / 2.4" (62mm) Insertable / 1.14" (29mm) Width