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; 6.9cm x 6.9cm x 6.9cm cube with 54 individual pieces