Includes 20 unique shapes, including star, heart, circle, triangle, oval and more - some shapes are alphabet letters. Shapes feature an embossed character design. Use the 6 interlocking grids to form a 2D play mat for beginner shape identification and sorting. One of the grids features a large squeaker to encourage sensory play. As children grow, the 2D play mat can be converted into a 3D cube for advanced sorting play. 3D cube doubles as a storage container, with all 20 sorting shapes fitting neatly inside. For ages 18 months and up.