Box contains a 3-in-1 washable, non-toxic child safe pad. This will enable you to stamp out 3 electric rainbow colors of each stamp aiding you and your students in counting, sorting, grouping, connecting or comparing items. These stamps can also be used with manipulatives to record solutions and extend manipulative activities. Each pad measures 2" x 2". Dye-based. 1 ink each, bundle of 3, 3 ink pads total