KINGOU Child Intelligence Jigsaw Toy Wisdom Wooden Tangram Puzzle Brain Teaser for Kids Material: High quality timber. Size: 5.5 x 4.72 inch. Mission: fill the different shaped blocks into the box. There are kinds of methods to fill them in. they also can make endless patterns. Recommended for ages 5 & up, children should be used under adult supervision, water-based paint, touch smooth. It is a great toy for one's imagination, creative thinking and problem solving. Like all of other minds puzzles by KINGOU, this is one of ideal item for Christmas stocking. Try to challenge it and active your brain. DO NOT LIMITED YOUR CREATIVITY.