This set includes 6 reflective, stainless steel balls in 6 colors: silver, gold, pink, blue, green and purple. Each ball features different contents, which change their characteristics when rolled or shaken. And the iridescent, mirrored surfaces provide a slightly distorted reflection to fascinate children while encouraging descriptive language. These manipulatives are perfect for multi-sensory gross motor activities. They are chemical-free, seam-free, non-porous and hygienic. Use the Sensory Reflective Balls indoors or outside. Provide a focal point for displays. Suitable for all ages. Size 2.4" dia.