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Tom's Guide
7 days ago
- General
- Tom's Guide
I'm a mattress tester — ignore the 7 buzzwords brands use and look for these instead
If you're shopping online for a new bed, you've likely skimmed a lot of copy that makes every mattress sound like a dream. And I can relate. I research every mattress I test, and that means I have to read a lot about trademark, innovative features that will revolutionize the way us mere mortals sleep. Common materials are given space-age titles straight out of a sci-fi novel, and one-size-fits-all designs promise to solve everyone's sleep woes. However, when I take a closer look, I realize these features are wrapped up in confusing, hyperbolic buzzwords to disguise the fact that they're pretty standard. That's why I've compiled a list of the top seven mattress buzzwords I'm sick of seeing, plus the features that you can actually find in the best mattresses instead. So, keep an eye out for these buzzwords when hunting the upcoming Labor Day mattress sales, and you'll snag a bed that lives up to its promises. It's been boiling summer this year, and it's not over yet. Cities and towns all across the USA are still feeling the heat, and this means a lot of stuffy, restless nights. Most mattresses today have at least some temperature-regulating features, and the word brands often use to describe their mattress covers is "breathable". According to brands, these "breathable" covers guarantee a cool night's sleep. Don't get me wrong, breathable materials like organic cotton or wool are great, but they are not the same as cooling materials. Get instant access to breaking news, the hottest reviews, great deals and helpful tips. In fact, the majority of mattress covers are made from breathable fabrics (I've never come across a mattress with a heat-trapping nylon cover, for instance) so a breathable cover really isn't anything special. While a breathable cover will of course boost airflow and won't trap body heat, it will not dissipate body heat either, nor will it cool you down. What to look for instead: A breathable cover alone will not keep hot sleepers cool, so instead look at the specialist cooling covers found in this year's best cooling mattresses instead. For instance, testers for the Brooklyn Bedding CopperFlex Pro Hybrid Mattress review and the Brooklyn Bedding Aurora Luxe mattress review loved the cooling GlacioTex covers, while the Cocoon by Sealy Chill mattress review praised the PCM cover of the budget cooling bed. Body-cradling memory foam has been a staple of the mattress industry since the 90s, but it has a major flaw: it can trap heat. However, many brands try to reassure customers that their proprietary foam is different by describing it as "open-cell". "Open-cell" foam, they say, allows increased ventilation to dissipate heat and keep you cool at night. Sounds good, right? Well, it turns out that all of today's mattress foams are open cell, so it's really nothing special and won't provide specialist cooling. In fact, you'll only find closed-cell foam in packing materials, wall insulation and yoga mats. What to look for instead: The best memory foam mattresses on the market have the good sense to use cooling materials that offset the foam's propensity to trap heat. For instance, a Cool Touch Cloud Cover knit with cooling yarns and a heat-resistant climate fiber layer kept testers sleeping cool on the all-foam Puffy Cloud during the Puffy Cloud Mattress review. Beds often come with mattress warranties which cover problems such as sagging and broken materials, but I'm seeing a rise in "forever" warranties (also called "lifetime" warranties). Lifetime mattress warranties may seem like generous extras, but they're also pretty unnecessary ones. Mattress should be replaced every seven to 10 years (up to 25 years in the case of latex mattresses) and the likelihood that you'll keep the same mattress for the rest of your life is pretty slim. Bottom line: there is no such thing as a mattress for life, and a lifetime warranty shouldn't give a bed an edge when choosing between two mattresses. What to look for instead: If you see a mattress that's perfect for you and just so happens to have a lifetime warranty, then go for it — all I'm saying is that it shouldn't be a deciding factor. All you need to look for is a warranty that lasts for at least 10 years, with decade-long warranties coming with the best cheap mattresses on the market. Along with warranties, a sleep trial is another benefit to look for in a mattress. Trials allow you test your new mattress at home during the return window, so you can either keep or return once you've slept on it for long enough. But how long is long enough? Well, some brands, such as Saatva and Nectar, seem to think a trial should last an entire year. While a 365-night trial is generous, it's pretty superfluous (just like a lifetime warranty) and shouldn't influence your shopping too much. You really don't need a whole year to decide if a mattress is for you, so a 365-night trial should only be seen as a nice little bonus. What to look for instead: It takes about four weeks to know whether a mattress is right for you, but trials start from your delivery date. This means your trial starts before you get a chance to set up your mattress, so with this in mind (plus other interruptions such as going on vacation during the trial period) I think a trial that lasts at least 90-100 nights should be enough. There's never a time where there are no mattress sales going on, but some brands want to make you think there'll never be another discount if you don't buy right now. Some even have a countdown banner at the top of their website urging you to make a decision before it's too late. The truth is that many brands — such as DreamCloud, Cocoon by Sealy, Nectar, and Siena — have evergreen sales that stay the same throughout the year, even during major sales events like Black Friday. The countdowns and the "Ends today!" warnings are just marketing tools to make you think you're getting a better deal than it actually is. What to look for instead: There are plenty of brands that roll out genuinely good deals during the biggest mattress sales of the year and even surprise us with flash discounts. To make sure you're getting a good deal, check out our deals hubs (most notably our Saatva mattress deals and Helix mattress deals hubs) for great price tracking. Also, look up how often a mattress is discounted by using price-tracking tools such as price-snapshotting Wayback Machine or Amazon price tracker Camel, Camel, Camel. You'll find so many mattress brands bragging that their latest mattress sleeps much cooler than its predecessor, but that's a pretty meaningless statement when you've never tried the original model. If you have indeed tried the older version then this new-and-improved slogan may hold some weight, but it's just a glib promise to everyone else. What to look for instead: Look for concrete data that tells you exactly how cooling a mattress is. For example, the Eight Sleep Pod can cool your bed down to as low as 55 degrees Fahrenheit (and many other smart beds are capable of such cooling). If you're not into the idea of a smart mattress, the Tempur-Pedic Tempur-Breeze mattress collection also promises a sleep that's five to 10 degrees cooler. There is no such thing as a "mattress for all", even if the best medium-firm mattresses come close, so approach one-size-fits-all beds with a dose of scepticism. While a medium-firm bed is designed to suit as many sleep positions as possible, other things besides sleep position needs to be taken into account. Body weight, sleep and health issues, whether you sleep alone or not, and even just personal preference needs to considered when mattress shopping, so the idea of a "mattress for all" is pretty far-fetched. What to look for instead: Do your research by reading our guides on how to choose a mattress , how firm your mattress should be, how thick your mattress should be, and how to choose a mattress for your sleep position.
Tom's Guide
24-07-2025
- Business
- Tom's Guide
Cocoon by Sealy Chill vs Siena Signature: Which cheap memory foam mattress should you buy?
Cheap all-foam mattresses can have an unfair reputation as heat-trapping, quicksand-feeling, bad-smelling beds. The Cocoon by Sealy Chill and Siena 10" Signature buck that bad rap, which is why they're two of our top-rated memory foam mattresses. So which should you buy? The Cocoon by Sealy Chill and the Siena Signature are both affordable memory foam mattresses that impressed our testers with their all-round comfort and support. If value for money is your top priority, these are among two of the best mattresses you can buy this year. But that doesn't help you choose between them. In this guide we'll be comparing the feel, support, performance and price of the Cocoon by Sealy Chill vs Siena 10" Signature mattress, to see which is the best cheap memory foam bed for you. Cocoon by Sealy Chill vs Siena Signature mattress: Price & trial The Sealy Chill is a budget-friendly cooling bed at $699 for a queen The Siena is a cheap mattress, with a queen only $359 Both offer a 10-year warranty but the Siena has a longer sleep trial The all-foam Cocoon is a lower mid-range mattress and a queen typically sells for $699. That's a highly competitive price, sitting alongside the Nectar Classic Memory Foam mattress ($649 for a queen) and the DreamCloud Classic Hybrid Mattress ($699 for a queen.) This price is even more appealing when you consider the Cocoon by Sealy Chill is a cooling mattress. These specialty beds are often premium options — the Cocoon is a rare budget choice (and we'll dive into how effective it is below.) Often sold at just $359 for a queen, we think the Siena is the best cheap mattress you can buy. For a real bargain, keep an eye on the Amazon Siena store, where we've spotted a queen for as little as $278. You'll never have to pay full price at either brand. We track mattress sales throughout the year and it's rare for the price to change at Siena. At Sealy Chill, it's practically unheard of. And Sealy throws in a free cooling bedding bundle with purchase, to sweeten the deal. Both brands offer a standard 10-year warranty. Sealy Chill's 100-night trial is fine, and the industry average, but Siena goes a step further with a 180-night trial. Cocoon by Sealy Chill Memory Foam Mattress: twin was $619 now $399 at Cocoon by Sealy You can always rely on the Cocoon by Sealy Chill 35% off mattress sale but while the price is predictable, we still think this is an excellent deal. A queen is only $699 and you get a free cooling bedding bundle included, to add to your chill comfort. Siena 10" Signature Mattress: twin $179 at Siena Like the Cocoon by Sealy Chill, we rarely see major deal changes at Siena. And like the Sealy Chill, the Siena is so well priced we don't really mind the predictability. However, if you do want to save even more on the Siena Mattress, we recommend browsing the Amazon Siena store, where we've seen some major price drops in recent weeks. Cocoon by Sealy Chill vs Siena Signature mattress: Materials & design Both the Siena and the Sealy Chill are 10" memory foam mattresses Both have a double-layer design The Sealy Chill has an upgraded cooling cover As affordable all-foam mattresses, the Cocoon by Sealy Chill and the Siena Signature mattresses share many similarities when it comes to design. First, they're both 10 inches tall (although the Siena is available in other depths.) This is an average mattress height and supportive enough for most adults, but 10-inch mattresses sometimes lack pressure relief for side sleepers. The interior of the Siena 10" Signature mattress (Image credit: Siena) Second, they both use two layers of foam to balance comfort and support. The upper (thinner) layer is a conforming memory foam that's intended to enhance pressure relief. The lower (thicker) foam layer is a stability foam, adding support to the design. While both brands use their own foam formulations to create different feels — and different durability, as we predict the pricier Cocoon by Sealy Chill to last longer — the most obvious design difference is the mattress covers. The (similar) interior of the Cocoon by Sealy Chill (Image credit: Cocoon by Sealy Chill) The Siena uses a breathable cover to improve air flow but the Cocoon by Sealy Chill goes a step further, infusing its cover with phase change material for a cool-to-the-touch feel and better temperature regulation. Cocoon by Sealy Chill vs Siena Signature mattress: Comfort & support Cocoon Chill is a medium-firm mattress, good for most sleep styles Siena Mattress is firm, best for back and stomach sleepers Neither mattress feels like a 'classic' memory foam Both Siena and Sealy Chill describe their respective mattresses as a six on the mattress firmness scale (with one indicating soft and 10 hard.) However, in our experience the Cocoon by Sealy Chill is closest to this medium feel, with our testing team agreeing it was a 6.5 out of 10 which is on the lower side of medium-firm. In our Cocoon by Sealy Chill mattress review, we found it most comfortable for back and side sleepers, with good pressure relief at the shoulders and hips. While the Cocoon by Sealy Chill has some contouring, it doesn't have much 'sink' (Image credit: Future Ltd) The Siena, on the other hand, delivered a different experience. Our Siena Memory Foam Mattress review team found this bed closer to a nine on the firmness scale, indicating a firm feel. With impressive support, the Siena suited our back and stomach sleeping testers but was too firm for side sleepers. Neither mattress delivers that 'hug' feel we expect from a classic memory foam but the Cocoon comes slightly closer, contouring to the shoulders. However, these are both mattresses you lie on top of, rather than sink into. The Siena was a touch too firm for side sleeping (Image credit: Future) There's one way in which these beds do perform like a traditional memory foam, though: motion isolation. All-foam mattresses are known for their ability to absorb movement and both the Siena and the Sealy Chill scored highly in this area. Even if you share with a restless partner, you should be able to sleep without disruption. When is comes to edge support, the Siena has the clear edge (pun intended.) Thanks to that firm feel it has a higher level of support overall and if you need to press against the sides to get out of bed in the morning, you'll find the Siena provides the more supportive base. Cocoon by Sealy Chill vs Siena Signature mattress: Temperature regulation Cocoon by Sealy Chill is a dedicated cooling mattress The Siena impressed us with its breathable feel Hybrid options available of both, for better air circulation We think the Cocoon by Sealy Chill is the best cooling mattress you can buy if you're on a budget. The phase change material used in the cover, combined with the gel memory foam, helps keep temperatures down even on hot nights. Cheap memory foam mattresses do have a reputation for sleeping warm but the Siena surprised us with its breathable feel. This is in part due to the firm foams — as they don't hug the body, they're less likely to trap heat. (Image credit: Future) For a cooler experience, consider upgrading to the hybrid variety of either model. The best hybrid mattresses tend to have superior cooling, as the springs allow for better air flow. Cocoon by Sealy Chill vs Siena Signature mattress: Which should you buy? Buy the Cocoon by Sealy Chill Memory Foam mattress if... ✅ You tend to sleep hot: Using PCM to absorb and dissipate warmth, the Cocoon by Sealy Chill is a good choice for hot sleepers on a budget. ✅ You like to sleep on your side: While the Cocoon by Sealy Chill doesn't have the plush cushioning you'll find in our favorite mattresses for side sleepers, the memory foam delivers good pressure relief to the shoulders and hips. ✅ You need a full bed upgrade: Sealy Chill offers a free cooling bedding bundle – including sheets, pillows and a mattress protector – with every mattress purchase. Buy the Siena 10" Signature Mattress if... ✅ You're a stomach sleeper: The Siena's firm feel offers plenty of support at the hips and spine, a common feature in the best mattresses for stomach sleepers. ✅ You're on a very tight budget: With a high quality build, we recommend the Siena for anyone who needs a new mattress but doesn't have much to spend. However, it does lack the specialist design of the Cocoon. ✅ You need to push against the mattress to get out of bed: Edge support is often the weak point in a budget all-foam bed but the Siena remains sturdy up to the sides.
