Bettli 32 Colors Fimo Polymer Clay Blocks Soft Sticky Plasticine Craft Student DIY 32 Colorful Air Drying Clay Basic,perfect for childern to make any image they want! Non-toxic material, safe for children Dry modeling clay is Soft and easy to hadle, non messy, and doesn't leave residue at all. Air dries completely in 24 hours. Developmental toys, good for brain development and hands-on skill practice. Enhanced the relationship between children and parents while you are palying the clay together!