1,1. 20g of soft clay dough will produce 1 baby handprint or footprint of 0-6 months. 2,2. The clay will start the drying process when it exposure to light and air,the clay takes 24 hours to fully harden. 3,3. This super soft clay dough is a safe, non toxic and easy to use. 4,4. Very soft, smooth, non-sticky. Does not stick to your hands, super stretchy,Easy to dry, and it can help you record your babies growth process. Material: Natural Calcium PowderColors: 7 Colors AvailableNet Weight: About 20g or PackFunction: Baby Growth RecordAge: Newborn,6 Months, 12 Months, 18 Months and so on Tips:A pack of 20g,only enough to print the footprints of a newborn baby, depending on the age,the amount required is different,The older the child, the more you need. Instructions for use:1. Take the product out of the package2. Flatten into a circle or square3. Press fingerprint or footprint Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.