In the world of children's toys, material safety is the eternal top priority. Polyethylene (PE), with its non-toxic and harmless properties as well as its resistance to drops and impacts, has become the preferred material for infant and toddler toys worldwide. From soft rattles to educational building blocks, from outdoor slides to role-playing props, PE, in the guise of an "omnipotent protector", is providing children with an umbrella of safety as they explore the world.