A set of 12 wooden cylindrical double ended blocks; 7 with different materials and 5 with different surface textures. Ask children to identify the right materials or textures by only touching the pieces and to match the pieces to those on the board. A great tactile resource to help children develop material and texture recognition. The board can stand on an angle and fits neatly into the wooden storage tray. The tray measures 20cmW x 20cmD x 5cmH.