Child-safe inks are ideal for younger stampers as they are water-based, kid-safe and non-toxic. The impressions fade into the paper and work best on non-glossy surfaces. Measuring 3.75" x 2.25", 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 child-safe. FD&C approved ingredients and conforms to ASTM-D4236. Made in the USA.