"Elastic polymer" refers to a type of material that can stretch and bounce back to its original shape when a force is applied to it. It is like a rubber band that can be stretched and then returns to its original form. Full definition
The surround is made from a dual layer of elastic polymer. (geekwrapped.com)
The surround is made from a dual layer of fiber - reinforced elastic polymer. (geekwrapped.com)
But when gold particles are mixed with elastic polymers, it «self - organizes» into chains, making the material conducive when expanded or contracted, according to a report in Wired. (entrepreneur.com)