Baidecor Ukraine Swallow'S Nest 3D Jigsaw Puzzles Toys Finished size: 12.2"x8.3"x11.8" Build the world's famous buildings,learn more about the world,99 pcs included Environmental friendly material and easy to assemble Develop abilities of concentration,logical thinking,imagination,problem solving A good way to exercise brains,develop a hobby also relax from work