Children love handling stones and these tactile threading pebbles invite sensory play and allow children to explore key skills such as counting,pattern making as well as hand-eye co-ordination skills.Children will use the threading pebbles to sort and sequence by shape,texture and colour.Each set of the Threading pebbles includes 16 threading pebbles in four different shapes, shades, and textures, plus two chunky laces. Pebbles measure 40mm. Laces measure 180mm. Age 2+.