Sharpen your thinking and logical reasoning skills with Bits and Pieces’ Bottled Frustration brain teaser puzzle for adults. This unique puzzle game has been crafted to exercise your mind and stimulate your cognitive abilities. A careful examination and study of this puzzle's parts and configurations may reveal what has to be done to free the marble from its bottled captivity. Once you know what has to be done, the trick is doing it! This engaging brain teaser for adults has been crafted from premium quality materials for an optimal experience and longevity. It’s extremely compact so you can easily carry it anywhere at any time. Give your eyes a break from all the screen time and engage in a more wholesome and tactile gaming experience. We have also included a solution guide as a safety net with this impossible puzzle bottle. We have also included a solution guide as a safety net with this impossible puzzle bottle. Our unforgettable brain teaser puzzles for adults make fantastic gifts for both friends and family. This bottle brain teaser for adults measures 3" x 8" x 1-1/2"