These tactile stones have been designed to soothe and calm children helping them to focus concentrate and feel secure: key elements of productive learning.By holding and/or rubbing a stone a child's sensory input is occupied helping to relieve stress and anxiety freeing their mind to focus on the task in front of them.Offering an appealing range of shapes textures and natural colours the set includes twelve stones: two each of six designs (heart egg grooved knobbly two-tone and hollowed).Age 3+.