Assertion: foam's density | /r/HasProperty | 4.0 lbs./ft
Facets:
Source sentences:
text: Higher-priced brands will tend to use higher-density memory foam (5 lbs/ft or greater in significant quantity); medium-priced brands will tend to use mostly medium density (4.0 lbs./ft); and lower-priced brands will tend to use mostly lower density (2.5 - 3.0 lbs./ft).