The COLT line of toys are safe to use with your favorite Water Based Lubricant's. Powerful vibrating dong with unique up and down continuous revolving heavy duty metal beads. Sturdy, man-sized, solid, easy grip handle. Multi-speed reversible bead rotation, multi-speed vibrations and independent controls. This over-sized, anal ready and appropriately named Big Vibe will satisfy with its full coverage, ultra filling shape and extra powerful rotating vibration. Embedded under the surface of an ultra slick PVC shaft you'll see two vertical rows of metal beads that twist and twirl at multiple speeds as the extremely powerful vibration does it job. Generous 30”/ 76 cm cord PVC 4 C batteries 6.5”x 1.5”/18 cm x 4 cm.