STAR TREK PINK TRIBBLE - MEDIUM SIZE - aka Genetically Altered Safe GAS TRIBBLE The Softest Electronic Tribbles Ever Made! High Quality Plush features the Original Sound FX from the Classic Star Trek episode, "The Trouble with Tribbles" Medium Size Tribbles are 5" x 4.5 x 4" Sound and Vibrating FX activated by Touch - Pet or Tap it gently and The Tribble will come to Life! Hidden Velcro Pouch Safely Hides Electronics --Uses 2 Replaceable AA Batteries!