![]() This makes them quite heavy, but they are also incredibly supportive. Mattresses that are made from memory foam are denser than traditional foam mattresses. In addition to being used by NASA, it has also been used in sports equipment, medical settings, shoes, and of course, mattresses. It is supportive, matching pressure applied against it, and can slowly spring back to its original shape. Memory foam has a specialised open-cell solid structure and is created by feeding gas into a polymer matrix. NASA began researching ways to improve the aircraft cushion and thus astronaut safety. Astronauts at the time were complaining of discomfort during lift-off, which, as you can imagine, is an incredibly forceful process considering the spacecraft needs to be hurtled beyond the Earth’s atmosphere. Memory foam was developed by NASA in the late 1960s. We do not compare or include all service providers, brands and offers available in the market.Įmma Original offers breathability + supportįlexible delivery and return policies Read Reviewġ00% recyclable materials and carbon neutralįree delivery and returns / 200- night trial Read Review We make the best efforts to keep the information up-to-date, however, an offer’s terms might change at any time. The reviews, rating and scoring are provided “as-is” without guaranties or warranties regarding the information contained in our website, which shall not be considered as endorsement. See our How we Rate page and Terms of Use for information. In the event rating or scoring are assigned by us, they are based on the position in the comparison table, or according to other formula in the event specifically detailed by us. ![]() These advertising fees, combined with our criteria and methodology, such as the conversion rates, our team of reviewer's finding and subjective experience and product popularity, impact the placement and position of the brands within the comparison table. We are able to maintain a free, high-quality service by receiving advertising fees from the brands and service providers we review on this website. This website is an informative comparison site that aims to offer its users find helpful information regarding the products and offers that will be suitable for their needs.
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