Yellow dice have numerals one through six and blue dice have numerals seven through 12. The foam is lightweight, soft, quiet and washable and the dice can be used as teaching tools. The square edges stop the dice from rolling too far. Details:Blue and yellow0.75" cube dice size3 packs of 20 (60 total)Numerals 1 through 12Each pack comes in a resealable storage bagTeaching tips includedFoamFor ages 3 and up