The Sensory Perception Cubes come in eight different clear colours and feel smooth and inviting to touch. The very youngest children will enjoy handling them in free sensory play and older children can hold them up and look through to see the world around them in different colours. Holding two or three cubes together creates new colours and hues for colour mixing. They can be used to stack towers, or included with other similar resources to create imaginative small world scenes. Size: 35mm. Pack of 8.