XS Head Stress Series Trapezoid Iq Collection Puzzle XS Headstress Trapezoid challenges you to assemble a 3D triangle, and it's harder than it looks The 4-inch wooden IQ puzzle is beautifully finished, making it easy on the eyes and fun to handle Challenge yourself and entertain your friends with this fun brain buster For 1 player age 8 and up Made from sustainably grown wood