Double Fuk is available in two colors: Clear and Purple. Each sold separately. Strap-on pleasure for two with a bendable spine. Double dong features 4 powerful vibration modes. Made using phthalates free, non-toxic materials. RoHS compliant. Materials dong PVC, elastic straps, power control ABS plastic. Vibrating sex toy requires 2 AA batteries, not included. Do not leave batteries in the vibrator between uses. Dong measures 13 inches long. A water based lubricant is recommended. Always clean before and after use. One size fits most. Double Fuk from Nasstoys of New York.