Reflective mirror balls that look identical, but all have individual characteristics. Some wobble when rolled, or turn and won't roll in a straight line, some feel funny when twisted, spun or shaken and others make different shaker or rattle sounds. The shiny mirror surface provides a distorted fish-eye lens reflection which is fascinating for children to observe. They are robustly constructed from hard wearing stainless steel, are lightweight, smooth and tactile to handle and can be of particular appeal to children with special needs, or for those requiring inspiration in creative language. Balls measure: 10cm diameter. Set of 6. Ages 0+.