This puzzle 3D, mainly of wood with rounded forms and soft to the touch is very pretty. It is first composed of 4 parts, like a traditional puzzle. But, also, each surmounted by a shaft with pins. The child must then stack other colorful pieces based on these pins. It has 12 rooms and the different forms to place on the right pin (square, rectangle, triangle, circle). Identically shaped parts are also in the same color: yellow, green, pink or blue with a color gradient. (Ex: 3 circular pieces are in blue tones - the 3 triangles in pink ....) This game is a great learning recognition and management of forms (Recommended for 18 months and +) Made in China for the Swiss brand HAPE, this pretty toy mainly of wood (the stems are molded plastic) is presented as meeting safety standards EN 71 and ASTM.