SiamMandalay&reg;: Snaking Wooden Serpent Cube 3D Brain Teaser Wooden Twisting Snake Puzzle - Classic Brain Teaser Puzzle for Adults BEST SELLER: Wooden Snake Cube Twisty Brain Teaser Puzzle from SiamMandalay. Handcrafted Dainty 3D Wooden Brain Teaser Puzzle Improves Mental Capabilities for Longer Lasting Brain Health LIFETIME GUARANTEE: The hallmark of all SiamMandalay wooden puzzles. If it breaks - ever. We will send you a new one. Absolutely Free. HANDMADE PUZZLES: Run on a fair trade policy using premium grade monkeypod wood & time honored, traditional methods. Difficulty Level: 3 (Difficult) v Dimensions: 2.25" x 2.25" x 2.25" 3D BRAIN TEASER: Fully Organic - Manufacturing Process.