Interlocking Sensory Stones

Ideal for exploring matching and symmetry with young children, these pairs of stones are designed so that each pair interlocks in a different way - from concentric circles that can be continually twisted to shapes that can be interlocked in two, three and four positions. The set contains eight stones (four pairs) measuring 7mm ach and can be used for a wide variety of sensory play, printing and mark making activities.