Whether you're stacking or nesting, there's fun down on the farm! This set of cubes is is hollow and made of thick, sturdy paperboard so they are very lightweight and perfect for infants or toddlers. The largest cube is 13 cm (5") and the smallest is 4 cm (1.5"). Each cube features a colorful design with farm animals and objects to count according to the number of the cube. The cubes can be either nested into each other or stacked up high. The completed stack measures 86 cm (34") tall.