(1) 20g soft clay dough will produce 1 baby handprint or 0-6 month old footprint. (2) The clay is exposed to light and air to start the drying process, and it takes 24 hours for the clay to harden completely. (3) This super soft clay dough is safe, non-toxic and easy to use. (4) Very soft, smooth and non sticky. Non-sticky, super stretchy and easy to dry, it helps you keep track of your baby's growth. (5) Lightweight handprints, growth records, DIY toys, easy to use Material: natural calcium powder Color: 10 colors to choose from Net weight: about 20g/bag Function: baby growth record pack: 1X bag of clay (not including round tray) Age: Newborn, 6 months, 12 months, 18 months, etc. hint: A pack of 20g is only enough to print the footprints of a newborn baby. Depending on the age, the required amount is also different. The older the child, the more necessary it is. Instructions for use: 1. Take the product out of the packaging 2. Flatten into a circle or square 3. Press fingerprint/footprint 4. Air dry