Item Type: Brain Teaser Puzzle Material: Metal, plastic, basswood. Product Size: Approx. 15 x 13 x 10cm / 5.91 x 5.12 x 3.94in Package List 1 x Brain Teaser Puzzle 1Wood Material: Premium wood is playable and fall resistant, and is not afraid of destruction, and the safety design parts are firmly connected, and is not afraid of your baby's destruction. 2Better Training: Use hand and brain to unlock the toy, cultivate logical thinking, and toys that are suitable for children of all ages with complex abilities can strengthen the hand eye coordination thinking ability and gradually improve the ability. 3Happy Playing: When a child holds the toy in his hand, the combination of parts he touches is the same as in life. It can not only let children understand life, but also learn and practice basic change skills at their own pace while playing, making life easier. 4Great for Learning: A interesting way to educate children, the educational toy is designed for infants, preschool children, family students and autistic children, inspiring children to be busy, satisfies their curiosity in the game, and develops their independent hands on ability. 5Excellent Present: This will be the perfect choice for your child's best gift. It can surprise and delight your child. Suitable for any occasion. This quiet toy can provide sensory toys to keep your children away from electronic products.