Robustly constructed from stainless steel in mirrored gold silver and colourburst finishes these 3 smooth and seamless discus shaped buttons have different contents to produce a range of sound effects.The hand finished mirrored surfaces provide a distorted fish-eye lens reflection which is fascinating for children to observe.The buttons are are lightweight and tactile to handle making them of particular appeal to children with SENDStainless steel is an ideal material for using in sensory play resources:Chemical free – no toxinsDurable – strong and lightweightHygienic – non-porous and naturally bacteria resistantSpecification Size: 65mm diameterSuitable from birth