This set includes 7 reflective discus-shaped pieces for multisensory and stacking activities. The silver, mirrored surfaces provide a slightly distorted reflection which fascinates children and encourages creative language. These Buttons are smooth and lightweight with flattened midpoints so children can construct fun, wobbly towers during imaginative play. Robustly constructed with stainless steel, the Buttons are chemical-free, seam-free, non-porous and hygienic, which makes them ideal for all play environments. Use these reflective discs indoors and out, or to provide a focal point for displays. For ages 0+. Size of smallest button: 1.9”W. Size of largest button: 5.5”W.