Play with your Thinking Putty at home, school, work, the car, anywhere! Bring your Thinking Putty with you to work or school and leave it on your desk. You'll find yourself tearing off a handful and using it to have fun and relieve stress while your brain ponders infinite creative possibilities. Thinking Putty is loved by everyone and is safe for children ages three and up. Like all creative toys, Thinking Putty can get messy if left alone with young children. Thinking Putty should not be used by children under three years of age for this reason and should always be used by older children with supervision.