StillCool 3D Wooden Brain Teaser Puzzle, Genius Skills Builder 54 Pieces T-Shape Tetris, Educational Toy for Kids and Adults Explore Creativity and Problem Solving, Desk Puzzles Gifts BUILD YOUR BRAIN  Intellectual challenge for problem solvers and game lovers, this wooden Tetris piece puzzle delivers hours and hours of fun and mystery; take apart and put back together. RELAXING CHALLENGE  This educational toy provides a tough challenge but also allows you to relieve stress, relax your mood, and enjoy brain stimulation; fun for families, students, children. DEVELOP SKILLS  Clever 3D puzzle design builds genius skills, including ability to problem solve, spatial imagination, creative thinking, and more; play again and again to exercise your brain. HIGH QUALITY  Wooden puzzle pieces are precision cut, closely fitted, and built to last; painted finish; very sturdy and attractive, great for puzzle enthusiasts and teens. WONDERFUL GIFT  Educational and fun wooden puzzle recommended for age 6+ and anyone who loves a challenge; 7inch x 7inch x 7inch, with 55 individual pieces.