Memory foam, or viscoelastic foam, has been one of the biggest innovations in sleep technology ever since the introduction of innerspring mattresses. Originally intended to be a cushioning material for astronauts doing space flights, it has evolved into a comfortable, accessible, and pain relieving bedding material.
One major downside to viscoelastic is that it can trap a lot of your body heat; in recent years, manufacturers have had only partial success in improving its thermal conductivity using various other additives.
High end memory foam mattresses such as these can cost a fortune, so having a protector on them is a must. Except a protector, with its plastic membrane, causes heating issues of its own. So you’ve got the added burden of finding a protector that doesn’t added to viscoelastic foam’s inherent heat retention.
This can be a challenge for the uninitiated, so here’s my guide on finding the best mattress protector for memory foam, bolstered with reviews of actual market products to give you a good idea of what to look for.
Most of us don’t want to pay a lot of attention to something as seemingly trivial as a mattress cover, but in the case of a viscoelastic mattress, it is actually quite smart to do a little homework:
You’ve invested in a product to enjoy customized, plush comfort. For it to be ruined by a sharp hike in temperature would be a disappointment, but that is exactly what a cheap, plastic protector would do.
This would be especially painful if you purchased one of the high-end memory foam products with cooling gel in its surface layer – it won’t do you much good if the heat doesn’t transfer over from the mattress cover to the surface of the bed!
Furthermore, memory foam adapts its profile to your body based on the heat your body emits – if that heat is blocked by a protector in between, you will have to deal with a pretty slow response time (memory foam being a slow reacting material by itself!).
This can be a major nuisance if you change positions during sleep – the foam would not contour to the shape fast enough, leaving you with an uncomfortable sleep experience.
If a fluid gets absorbed into your viscoelastic mattress – you can consider it ruined. Besides weakening the adhesive binding the various layers inside it, it will also promote the growth of dust mites, bed bugs, and mold / fungus inside it.
The mold can create bad odor and may even lead to health issues if you’re exposed to it directly.
The dead skin cells and moisture (e.g. from sweating) create the ideal breeding ground for dust mites – the chief allergen that can infest your mattress. Itches, rashes, coughing, and even asthmatic attacks – these insects can trigger serious hazards thanks to a nasty allergen present inside their poop (disgusting, but true).
A memory foam mattress is usually purchased to enjoy the specific contouring comfort it provides – an ordinary protector will dull this sensation because of its wrinkly, plastic feel.
In order to secure your bed without compromising its comfort, you must seek a cover that has an ultra-thin profile which does not dilute / alter the original feel of your bed. Breathability and surface materials are closely tied to this point, and shall be discussed individually in the subsequent sections.
This refers to the ability of the cover to let air pass through it: every waterproof protector will block the flow of air to some degree – this is largely dependent on the size of the microscopic holes in its plastic membrane.
Referred to as micron size, this property determines the waterproofing and allergen-blocking capabilities of the product, as well. In other words, you need to strike a compromise between protection and breathability to ensure adequate thermal ventilation.
Those dealing with an acute dust mite infestation may have to go with a super-tight, minimally breathable 1 micron size protector, but most of us, who just want security from dead skin and the occasional spill, will do fine with a 5 micron size protector with considerably improved breathability.?
The increase in air flow will ensure adequate transportation of heat to the surface of the mattress itself, which will in turn result in better response to (changes in) your sleep posture. Besides this, you will obviously sleep cooler, which is a concern in itself as far as memory foam beds go.
Using a memory foam mattress with a protector in a warm, tropical climate is bound to cause some sweating during the night. Unless you’re OK with waking up in the middle of the night feeling hot and sticky, I would advise seeking a product whose surface is good at absorbing excessive moisture.
Natural cotton has been used as a garment fabric in warmer climates for millennia due to its softness, breathability, absorbency and durability. It makes for an excellent surface material for covers that intend to offer thermally regulated comfort at an affordable price point.
Viscose rayon fabric derived from bamboos is known for its silkiness, breathability, absorbency, and anti-bacterial properties. It is an excellent choice when you’re looking for minimal alteration to the comfort level of your bed, but it does lack in durability somewhat, so manufacturers often blend it with polyester to ensure that it can survive laundering.
Also called the New Age fabric, Tencel is a derived in a non-toxic manner from eucalyptus trees. It is soft as fur, considerably more absorbent than cotton, highly breathable, and has anti-bacterial properties just like bamboo rayon.
It is regarded as a high end material that is used specifically for its cooling and moisture-wicking properties in protectors intended to minimize heating.
These are materials with physical properties that enable them to absorb and release a considerable amount of heat from the environment, to regulate it to a particular temperature. PCMs are used some high-end covers as an active temperature management solution for both summers and winters.
5-sided (fitted sheet) protector does not cover the base of the mattress, so it gives some room for breathability. But this comes at the expense of exposing it to a bed bug infestation. A 6-sided protector will safeguard the bed against bedbugs as well, but because it completely envelopes the mattress, it will lead to more heating.
Personally, I’d recommend sticking with a fitted sheet style protector unless you’ve got a definite bedbug infestation. There’s also the fact that a fitted sheet cover can be removed and installed easily for laundering purposes.
No matter what the manufacturer says, the surest way to become educated about the qualities and limitations of a product is too check what the consumers are saying about it: if a cover is good at staying cool (or conversely, if it causes people to sweat / feel uncomfortable) you’re bound to find people discussing it in the reviews section.
Key Points
The top surface is made out of cotton terry, which dulls out the plastic feel of the underlying membrane. The cotton is soft, breathable and silent, so you won’t be experiencing the crinkling that is typical of a cheap cover. Since it has a fitted sheet style construction, it won’t move under the mattress as you sleep.
It comes with an FDA Class 1 Medical Device certification, and the membrane is guaranteed to be free of harmful chemicals e.g. vinyl, PVC, phthalates and fire retardants. Parents concerned about protecting their kids (particularly eczema / asthma sufferers) from exposure to hazardous materials will appreciate this.
In spite of its affordable cost, the protector comes with a hefty 10 year warranty – I only found minimal complaints about its performance though, so it is likely you may never need it! The protector is machine washable with mild detergents, and can be dried on low heat. Ironing / dry cleaning is not permitted.
Pros
Cons
With a cotton terry top surface, this cover yields soft, discreet and breathable protection that is sufficient for the average memory foam mattress sleeper without excessive cooling needs.
Key Points
This is a relatively affordable product intended for users looking for a comfortable, cool, eco-friendly protector for their memory foam mattress.
The surface is a blend of polyester and bamboo rayon – with the bamboo providing the silky, breathable comfort, and the polyester adding some strength to the fiber so that it doesn’t rip apart in the wash. The rayon also happens to possess anti-bacterial and allergen repelling properties.
The waterproof membrane has been designed to block fluids and allergens, without hampering the flow of air. Since the cover is OEKO-Tex certified, you don’t have to be concerned about exposure to harmful chemicals such as PVC, phthalates and vinyl.
While most consumers have been thoroughly pleased with the performance of this protector, it needs to be washed and dried at a low heat setting if you want it to last. That said, a 30 day money back guarantee, as well as a 15 year warranty, are ample insurance against ending up with a bad unit.
Pros
Cons
This is a relatively affordable product intended for users looking for a comfortable, cool, eco-friendly protector for their memory foam mattress.
Key Points
Here’s another bamboo-derived rayon cover that should work great for people who want to keep their viscoelastic mattress cool on a budget, sans the polyester blend as present in the product above.
The bamboo fiber excels at providing understated comfort that doesn’t alter the feel of your bed, and it can regulate the temperature of the bed thanks to its decent breathability. Thanks to its natural propensity to repel allergens and bacteria, it also makes the cover a good catch for allergy patients.
Surprising for a product this cheap, the protector’s waterproofing functions with a high degree of reliability, something that is abundantly clear from the glowing consumer feedback. Its ability to keep the temperature down has garnered considerable praise as well.
Like the Lulltra cover, it also carries an OEKO-Tex certification which ensures that it is free from hazardous substances. What’s most impressive is that it does all this, and packs a lifetime warranty and 30 day money back guarantee, while costing less than the competitor from Lulltra!
Pros
Cons
Another bamboo-derived rayon cover that should work great for people who want to keep their viscoelastic mattress cool on a budget, sans the polyester blend as present in the product above.
Key Points
Those who intend to use their viscoelastic mattress in an environment that causes lots of sweating should consider this cover.
The top layer, made out of eucalyptus-derived Tencel, ensures luxuriously soft, absorbent and breathable cooling. The material also incorporates intrinsic anti-microbial and hypoallergenic properties that should deter the onset of fungi / bacteria / dust mite infestations.
The manufacturer’s signature ‘Miracle Membrane’ is responsible for blocking fluids and allergens from reaching your mattress – the miracle, purportedly, is that it does so without impeding the flow of air, a frequent problem with these membranes.
While the protector is generally good at its job, going by user reviews, there have been some reports of manufacturing defects where the waterproofing failed – I’d suggest testing it out before installing it on your pricey mattress; if there’s an issue, take advantage of the included 10 year warranty.
One other thing, Tencel, as mentioned before, is a high-end material, so the protector costs a little above the market average.
Pros
Cons
Those who intend to use their viscoelastic mattress in an environment that causes lots of sweating should consider this cover.
Key Points
With a Tencel surface, dedicated Omniphase™ PCM technology, and an encasement style design, this protector is intended for consumers in need of all-round protection and strong temperature regulation in a single package.
As mentioned above, the Tencel creates a soft, airy and absorbent surface (not to mention anti-bacterial and hypoallergenic) that only serves to enhance the feeling of luxury generated by a high-end viscoelastic mattress.
The waterproof membrane ensures strong protection against fluids and allergens, and thanks to the Omniphase™ phase change material that it is combined with, you get a pleasant sleep regardless of the temperature of the environment.
The six-sided design with its Micro-Tite zipper completely seals your mattress off against all major threats, including bed bugs. Users have found the protection and temperature regulation of the product to be quite satisfactory, but there have been a few complaints of plastic noise – which is surprising given the Tencel surface.
This cover is considerably expensive because of all the high-end materials it uses, so only get it if you’re expecting serious heating problems. A 15 year warranty is included with it, which is significantly greater than the 10 year industry standard.
Pros
Cons
With a Tencel surface, dedicated Omniphase™ PCM technology, and an encasement style design, this protector is intended for consumers in need of all-round protection and strong temperature regulation in a single package.
You must have realized by now that getting a mattress protector for a memory foam bed means prioritizing certain considerations over others: breathability, discreetness, and comfort.
The first is necessary because of how memory foam tends to get hot on its own, while the next two ensure that you get to enjoy the feel and comfort of your bed as intended, without any alteration from a protector.
You will also have seen that options are available in a range of budgets, based on the degree to which they match the above described criteria. Naturally, the more advanced covers with PCM technology will offer the best temperature regulation, but their cost makes them overkill for the average consumer.
In fact, an inexpensive protector with a surface made from cotton terry, such as SafeRest Premium Hypoallergenic Waterproof Mattress Protector, with a waterproof membrane underneath it, will do just fine unless you’re in an especially extreme environment.
Cotton is a reasonably breathable, absorbent material, so it will be able to transport heat away from your body quite well. Add to this the fact that this particular product comes with an FDA Medical Class 1 rating and a 10 year warranty, and I feel justified in picking it as best mattress cover for memory foam.
How To Wash Mattress Protectors The Right Way
What Is The Best Mattress Protector For Toddlers?
Best Mattress Protector For Tempurpedic
Can you use a mattress cover with your electric blanket?
Which Is The Best Cooling Mattress Protector For You?
What Is The Best Mattress Protector For Bedwetting
How To Choose The Best Mattress Cover For Allergies
Luna Premium Mattress Protector Reviewed