• Pack Of 12 • Safe And Environmentally Friendly, Non-Toxic And Harmless, Strong In Shaping And Pure In Color. Play While Playing And Brain, Develop Hands-On, Creativity, Thinking, And Observation Skills. Please Keep The Slime At Room Temperature At A Cool And Dry Place To Maintain Its Quality. It Is Flexible And Can Be Used Again And Again. But Pls Put The Slime Back In The Container When You Don'T Use It. The Slime Will Get Dry If Exposed In The Air For Quite A Long Time