Set of 10 foam blocks with 5 different hardnesses or densities. There are various application possibilities: eg sorting the pairs per 2 equals, placing blocks in ascending order ... On the underside there is a color code with which you can check. At the bottom, the blocks are provided with small eraser tips so that they do not slide easily, even on a smooth floor.
Technical info:
- blocks: 24 x 16 x 10 cm - removable, sturdy cover (zipper): machine washable at 60 ° C
