Measuring 6.5" x 3.5", Jumbo Just For Kids ink pads are specially formulated with non-toxic ingredients approved by the FDA for use by children. Just for Kids ink pads are quick-drying, non-solvent, water-based, non-toxic, and childsafe. Conforms to ASTM-D4236. Made in the USA. For best results, store ink pads flat in a cool and dry location.