NEWEST&FUN&CHALLENGE This is a new kind of brain teasers. Compare with other traditional puzzle game. High-quality Puzzle combines, the advantages of Tangram game, jigsaw puzzle and sudoku puzzler. There are 30 challenges of varying difficulty. It is more interesting and challenging for kids. Keep the kids busy for hours. Give the kids a fun mental workout, create good family memories in brain-teasing fashion! With exquisite package and solution guide, plastic puzzle would be a great educational toy and gift for your kids. Specification： One Set Comes With 12pcs Plastic Puzzles , 30 Challenges Cards, Solutions Card And One Storage Bag. Size: 22 x 17.6 x 1cm Material: High-quality plastic Color: Multi-Color Fit For: Kids Over 3 Years Old Item Weight: 220g Various Challenge 1. Improve attention concentrations. 2. Improve kids' ability to grasp. 3. Improve kids' hand-eye coordination. 4. Improve color & shape recognition 5. Improve parent-child interaction 6. Improve logical thinking 7.Improve hones problem-solving skills, and spatial awareness Definitely Safe Material 1.High-quality plastic 2.Smooth surface 3.No lead 4.Non-toxic 5.No odor