Big buttons with 1 to 5 holes in bright colors. Ideal for sequencing and sorting, as well as developing mathematical and motor skills. Each button has a number in relief and its equivalent Braille symbol. The set includes individual activity worksheets and 5 - 3.28 ft. long laces. 1.75" - 40 buttons + 5 laces + 12 Activity Card. 3-6 years., The set includes individual activity worksheets, Long laces, Each button has a number in relief and its equivalent Braille symbol.