The Cascade Wave Single Sheath – With a gently rippled shaft of super soft silicone, the Wave will add another sensation to your play. The powerful motor housed in the tip of the Cascade Vibe (not included), and the Wave sheath with internal silicone dampening system, gives vibration only where you want, meaning you can stay in control, whist you lose control! For use with Cascade lubricating vibe. Cascade lubricating vibe sold separately.