Student or Learner
What kind of mattresses is "form-fitting mattresses"? A very comfortable one to fit the body shape of a person?
go3mo-24 ex)Human beings direct their activities toward the satisfaction of physical wants and general well-being. They avoid, whenever possible, situations that may bring about physical deprivation, including pain, hunger, and a need for sleep. Much contemporary advertising promises these satisfactions, whether from headache remedies, fancy foods, or form-fitting mattresses.
viscoelasticity - WordReference.com Dictionary of English, the adjective used for the foam's response to the body. And now, some trivia: In Spain, this foam is incorrectly advertised simply as "viscoelastica." No reference to "foam" whatsoever.
Please be aware that I'm neither a native English speaker nor a teacher.