The NiNO® Shake‘n Play is a sound-based memory game for two to four children ages three years and up, and fun for the entire family. Sixteen identical-looking shakers make eight matched pairs. The object of the game is to find the pairs by remembering the sounds and positions on the board. Shake‘n Play is a good development game and certified childproof by the LGA. Complete with wooden base, 16 shakers (8 pairs) plus game guide in 8 languages. Base is made of rubber wood, shakers are non-toxic plastic.