QToys | Zig Zag Blocks PuzzleTetris style games are well known as a fun and good brain teaser. This tetris style puzzle is great for children to use their cognitive skills as they figure out which piece of the puzzle goes where. This wooden and child friendly version can entertain children while promoting the development of their logical thinking skills. This puzzle is made with non toxic food grade colouring. Product Dimensions: 20x20x3 cm