PicassoTiles 80pcs of 1.2" (3 centimeter) magnet puzzle cube sensory toy construction magnetic building block set (PMC302) facilitates problem solving and fine motor skills, spatial reasoning, logic training, critical thinking, hand-eye coordination, & child brain development, by promoting creativity. If you can imagine it, you can build it and make it possible. For kids ages 3+. PicassoTiles Magnet Cube Building Blocks 80 Pieces 1.2" 3CM Magnetic Cubes Toy Construction Building Educational Sensory Toys with Idea Booklet for School & Preschool Kids Boys Girls Toddlers PMC302 | Picassotiles | | 80 PC Magnetic Blocks, Magnetic Building Blocks for Kids, Magnet Toy for Kids 3+ | Best Buy