Assertion: foam's cell structure | /r/CapableOf | react to weight
Facets:
Source sentences:
text: Second and third generation memory foams have an open-cell structure that reacts to body heat and weight by molding to the sleeper's body.
text: Modern memory foams are created using an open-cell structure which reacts to body heat and weight, allowing it to form around the body as you sleep which helps relieve pressure points.