Assertion: foam's tendency | /r/CapableOf | retain heat
Facets:
Source sentences:
text: One issue with traditional memory foam is that it has a tendency to retain heat, which can cause the sleeping surface of mattresses using that foam to become uncomfortably warm.
text: Because of the nature of the material, memory foam has a greater tendency to retain heat and to inhibit motion (including sex) on top of the mattress.