The 8 multi-coloured blocks display 5 different textures . Two of the sides have matching indentations that allow them to fit together snugly, and two other sides are covered with textured materials that can be stuck together. The last two sides contains mirrors. These versatile blocks can be used as stacking pieces,as well as for discovery games related to colours , textures and reflection. Product Size: ( 4.8 x 4.8 x 4.8cm) 18mths+