Whilst the air chambers and higher-tech features can be found in all Sleep Number mattresses, this design also features a 5-inch layer of foam for stress aid and assistance. Also Consider: This a single is backed by The nice Housekeeping Seal's limited warranty. We have had new testers try this https://mattressaroundmyarea47901.blogripley.com/30686783/the-basic-principles-of-latex-mattress-around-my-area