Ideal for exploring matching and symmetry, these pairs of interlocking 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, or four positions. The set contains eight stones (four pairs) measuring 75mm each. Age 18mths+.

Cast from a unique mix of resin and real stone, these pebbles are durable for messy play and mark making, both indoors and outside.