Majestic Encylopaedia Britannica Jigsaw Puzzles - Coral Reef Finished puzzle size measures 20" X 27" Features licensed images from the encyclpaedia britannica Unique design (3 sizes of puzzle pieces) encourages family members of different ages to work together Made entirely in the United States, the thickness of our puzzle pieces exceeds industry standards by 11% Also includes seven "Did you know" questions to help reinforce that puzzle's educational value