【100% Natural Basswood】Our tangram puzzles are made of solid basswood, the blocks are sturdy enough with a thickness of 1.5 cm, while ordinary blocks are only 0.48 cm with inferior pine. Non-toxic paint, odorless, no burrs, in line with US CPSIA & ATSM safety standards.【Parent-child Interaction】Adopts geometric patterns and bright colors, keeping children and parents busy with various play options. Parents drop blocks randomly from the top opening, children solve puzzles with the blocks they receive from the corner. Ergonomic backrest design, caring for the child's growth. Just like Tetris without a screen and time limit!【Various Shapes and Challenging Fun】Unlike ordinary block puzzles, we offer a cute crocodile board, a variety of pattern combinations possible, fish, shape, tree, flowers, houses, giraffes, guns, Rubik's cubes. Creating shapes to practice fine motor skills, awaken imagination and creativity.【Creative Brain Toy】Your children try to fit pieces on the board, their attention is focused, brain and intelligence develop, logical thinking is trained, spatial awareness is formed by building Rubik's cubes, from flat to 3D cognition, opening up a new concept of space.【Classic Leisure Option】No one loses their love for tangram puzzles, never out of style, a nice distraction for children and adults to put down electronics. Sensory toy, fidget toy for children, stress reliever for anxious adults, to help slow memory decline in the elderly. Perfect birthday and Christmas gift!