Updated May 13, 2020We spend over a third of our lives sleeping, which is why it’s so crucial when shopping for a mattress to not settle for the cheapest one. Mattresses are available both in stores and online, but for those looking for the best value, an online mattress is the way to go.Online mattress companies sell directly to consumers rather than through other retailers. As a result, these mattress companies offer high-quality beds at affordable prices— plus, with extended sleep trials, customers can try out a new mattress within the comfort of their own home without pressure to buy from eager salesmen.In our article, we offer the best online mattress choices on the market today, and provide a comprehensive guide on what to look for in the right mattress.Our Top Mattress RecommendationView on AmerisleepRead AS3 customer reviewsAS3 Highlights100-night sleep trial20-Year WarrantyDesigned to reduce pain pointsHeat reducing mattress coverComes in King, Queen, Twin, Full, and SplitsOur Runner-UpView on ZomaRead Zoma customer reviewsZoma Highlights100-night sleep trial10-Year WarrantyDesigned for faster recoveryTriangulex™ technology promotes healthy postureComes in King, Queen, Twin, Full, and SplitsBest Online MattressesMattressHighlightPriceAmerisleep AS3Responsive Bio-Pur® memory foam prevents overheating and provides optimal pressure relief.$1199ZomaTriangulex™ encourages spinal alignment by giving softer support to heavier sections of the body.$750Original Purple®The Purple Grid™ adjusts to each sleep position for consistent comfort and support.$1099Zinus Green TeaGreen tea extract with ActivCharcoal keeps the mattress smelling fresh.$156BearGraphite-gel memory foam improves muscle recovery and relieves pressure points.$840TuloMemory foam infused with titanium particles pulls heat away from the body for a cooler sleep.$699Nolah Original 10Plush feel of AirFoam™ conforms to the body without trapping heat.$1019Nest Alexander Signature HybridCopper-infused TitanChill Endurance Foam® dissipates heat and improves blood flow.$12991. Amerisleep AS3Image Credit: AmerisleepThe Amerisleep AS3 is our favorite online mattress. As Amerisleep’s most popular mattress, the AS3 is the perfect medium, making it great for side and combination sleepers.The Amerisleep AS3 mattress is 12 inches thick and contains 3 inches of Bio-Pur®, 2 inches of Affinity with HIVE® technology, and 7 inches of Bio-Core®. The mattress cover incorporates a lightweight, breathable fabric that helps to keep air flowing throughout the mattress so you never overheat.Bio-Pur® is plant-based memory foam. To make it, manufacturers partially replace petroleum with castor oil during the production process. This material is more breathable and responsive than traditional memory foam.The Affinity layer contains HIVE® technology, which forms hundreds of hexagonal-shaped segments to create firmer support for the head, back, and legs, and softer support to the shoulders and hips. HIVE® evenly supports the body and encourages spinal alignment.Bio-Core® forms the support base layer of the AS3. This durable foam evenly distributes body weight across the sleep surface without the risk of sagging.The Amerisleep AS3 mattress comes with a 100-night sleep trial and a 20-year warranty— one of the best in the mattress industry. The warranty covers manufacturing defects which could damage the foam and sagging greater than 0.75 inches.2. ZomaThe Zoma mattress is another excellent online mattress option. The cooling features and zoned support of the Zoma mattress prevent overheating and improve muscle recovery, making it a great option for athletes or those who lead an active lifestyle.The Zoma mattress is 11 inches tall and contains 2 inches of Triangulex™, 2 inches of Reactiv™, and 7 inches of Support+. The polyester knit cover wicks away moisture to regulate temperature.Hundreds of triangular-shaped segments form the 5-zone support layer of Triangulex™, providing soft support to the shoulders, head, and legs and firm support for the hips and back. Triangulex™ is also topped with cooling gel to absorb and evenly disperse body heat.The Reactiv™ layer has a responsive, latex-like feel, making it easier to switch sleep positions and preventing deep sinking.Support+ is Zoma’s base foam that reinforces the top layers and prevents sagging.The Zoma mattress comes with a 100-night trial and a 10-year warranty, protecting against sagging greater than 0.75 inches.3. Original Purple®The Original Purple® mattress has a unique feel thanks to the Purple Grid™ (formerly known as the Smart Comfort Grid™). This gel-like material automatically adjusts to each sleep position and offers cooling through its open air channels. With its medium feel, the Original Purple® mattress is great for side and back sleepers.The Original Purple® mattress is 9.5 inches thick and contains 2 inches of the Purple Grid™, 3.5 inches of poly-foam, and 4 inches of high-density poly-foam. The Lycra® blend mattress cover offers sleepers a soft, plush sleep surface.The Purple Grid™ is made of hyper-elastic polymer, a gel-like material which compresses slightly under weight, relieving pressure points without the risk of sagging.The poly-foam transitional layer encourages healthy spinal alignment and keeps the body resting on the surface of the mattress.The high-density poly-foam base evenly supports the body without risk of sagging.The Original Purple® mattress includes a 100-night trial and a 10-year warranty, which covers sagging greater than 1 inch.4. Zinus Green TeaThe Zinus Green Tea mattress is a great option for those on a tight budget. We focus on the 8-inch option, but the Zinus Green Tea mattress is also available in 6-inch, 10-inch, and 12-inch heights. The medium feel of the mattress makes it ideal for side and back sleepers.The Zinus Green Tea mattress is 8 inches tall and contains 2 inches of green tea-infused memory foam, 2 inches of high-density foam, and 4 inches of high-density base foam. The knit jacquard mattress cover is soft and breathable.The top memory foam layer is infused with green tea extract and ActivCharcoal— the antibacterial properties keep dust mites and odors from penetrating the mattress so the bed smells fresh. Plus, the comforting feel of memory foam contours to the body to relieve pressure points.High-density foam contains ventilation holes to improve air flow.The convoluted shape of the high-density base foam provides channels for air to pass through. The base foam reinforces the shape of the bed and supports the body with little risk of sagging.The Zinus Green Tea mattress includes a 100-night sleep trial and a 10-year warranty, protecting against sagging greater than 1.5 inches.5. BearThe Bear mattress is another option designed for athletes. The responsive layers of foam contours to the body to relieve pressure points. With a medium-firm feel, the Bear mattress is a great option for all types of sleepers.The Bear mattress is 10 inches tall and contains 2 inches of graphite-gel memory foam, 3 inches of responsive foam, and 5 inches of high-density support foam. The mattress cover incorporates FDA-determined Celliant® technology, transforming body heat into energy.By adding graphite to their gel memory foam layer, Bear enhances the mattress’s ability to regulate temperature by effectively pulling heat away from the body, reducing inflammation, and improving muscle recovery. At the same time, gel memory foam contours to the body’s natural curves to relieve pressure points and reduce aches and pains.Responsive foam acts as a transitional layer between the comfort and support layers— the foam keeps the body resting on top of the bed and prevents heavy sinking.High-density foam reinforces the top layers, prevents noise, and is built to last.The Bear mattress comes with a 100-night trial and a 10-year warranty, protecting against sagging greater than 1 inch.6. TuloWhile the Tulo mattress is available in three firmness options (soft, medium, and firm), we chose to focus on the medium mattress. This all-foam bed contains four distinctive layers for the ultimate balance of comfort and support, great for any sleep position.The Tulo mattress is 10 inches tall and contains 2 inches of memory foam, 1.5 inches of convoluted foam, 2 inches of responsive foam, and 4.5 inches of high-density poly-foam. The polyester-Tencel® knit blend mattress cover offers a soft sleep surface.For the comfort layer, Tulo infuses traditional, pressure-relieving memory foam with titanium particles which pull heat away from the body. To further regulate temperature, Tulo includes a layer of convoluted foam, foam with cut ridges to allow for better air circulation inside the mattress.A responsive poly-foam acts as the transitional layer. It conforms to the body without allowing the body to sink too deeply into the mattress.The high-density poly-foam base varies in feel, depending on the firmness level the customer chooses— either soft, medium, or firm.The Tulo mattress comes with a 120-night sleep trial and a 10-year warranty— Tulo does require customers keep the mattress for at least 30 days before they’ll issue a return.7. Nolah Original 10The Nolah Original 10 was designed for side sleepers— it’s scientifically proven to give four times less pressure points in the shoulders and hips than traditional memory foam beds.The Nolah Original 10 mattress is 10 inches tall and contains 2 inches of AirFoam™, 1 inch of high-resilience foam, and 7 inches of high-density foam. The mattress is encased in soft, natural viscose material to wick away moisture.Nolah’s special AirFoam™ has a cushioning, responsive feel— similar to traditional memory foam, AirFoam™ conforms to the body, relieving pressure points without trapping heat or making the sleeper feel stuck inside the mattress.The responsive bounce of high-resilience foam is more durable than latex, and makes it easier to move at night.The high-density base foam evenly supports the body across the sleep surface and reinforces the top layers.The Nolah Original 10 mattress includes a 120-night sleep trial and a 15-year warranty.8. Nest Alexander Signature HybridThe Nest Alexander Signature Hybrid mattress comes in three firmness options— plush, medium, and luxury firm. For this article, we focused on the medium. The luxury feel of ventilated, copper-infused memory foam and the edge support of pocketed coils provides sleepers with an excellent blend of comfort and support.The Nest Alexander Signature Hybrid mattress is 13 inches thick and contains 3 inches of TitanChill Endurance Foam®, 1 inch of SmartFlow support foam, 8 inches of pocketed coils, and 1 inch of base support foam. The quilted thermic phase change fabric keeps body temperature even and consistent, with an additional 0.25 inches of gel memory foam for a pillow top.TitanChill Endurance Foam® is a copper-infused memory foam which pulls heat away from the body, improving blood flow and offering better muscle recovery.SmartFlow support foam is a transitional layer between the comfort layer and the support layer. The foam has ventilation holes for better air flow inside the mattress.Individually-wrapped steel coils restrict motion transfer and reduce noise potential. Pocketed steel coils line the perimeter of the mattress, providing excellent edge support for those who prefer sleeping on the edge of the bed. The base foam layer reinforces the shape of the bed.The Nest Alexander Signature Hybrid mattress comes with a 100-night sleep trial and a lifetime warranty— the warranty lasts as long as the original purchaser owns the mattress.SEE ALSO: Mattress Size and Dimensions GuideBenefits of an Online MattressPurchasing an online mattress from a bed-in-a-box brand is in many ways better than buying a mattress in the store. Customers don’t have to worry about pressure to buy from salesmen and can try a new mattress with a risk-free trial at home. Because online mattress companies cut out the middleman (salesmen, commissions, retail), they can offer beds made from high-quality materials at a lower cost.It may also be worth it to see if a mattress company offers a white glove delivery service. This service includes removal of your old mattress and installation of a new one.What to Consider While Shopping for the Best Online MattressBefore committing to a new bed, consider the mattress type, your weight, favored sleep position, and available sleep trials, warranties, and return policies. Doing so will help you choose the best mattress.Mattress TypeEach type of mattress is different with its own unique feel. Some sleepers may prefer a mattress with more bounce, while others like to slightly sink into the surface.Memory FoamKnown for its contouring abilities, memory foam conforms to the natural curves of the body to relieve pressure points. It has excellent motion isolation, stopping any surface movement from disrupting sleep. Thanks to its construction, memory foam sleeps silently.A drawback to a memory foam mattress is its heat retention. Because of its dense construction, memory foam traps heat, however, potential shoppers can avoid this problem by looking for a memory foam mattress with cooling properties, like plant-based or gel memory foam, or memory foam infused with copper or graphite.InnerspringInnerspring mattresses have a bouncy surface and great edge support because of the steel coil base. The open structure of the coil layer allows for continuous air circulation inside the mattress.While an innerspring mattress is more responsive than other types of mattresses, it also provides less pressure relief because the comfort layer is so thin— usually it’s less than 2 inches thick. Innerspring mattresses also have more noise potential than other mattress types.LatexLatex has a similar feel to memory foam— it conforms to the body, but not as closely to relieve pressure points. It also sleeps cooler than traditional memory foam and has a responsive bounce.Latex is either natural or synthetic: natural latex is created from rubber tree sap which is whipped into a froth, while synthetic latex is created through a chemical process. Dunlop latex is 100% natural, and while Talalay latex does contain natural latex, manufacturers add polyurethane fillers to give it its soft, sponge-like feel.Latex mattresses are more expensive, especially if the mattress contains natural latex, and can be heavy to move.HybridA hybrid mattress combines the pressure relief of memory foam with the responsive bounce of an innerspring— essentially two mattresses in one perfect bed. Plus, hybrid mattresses produce less noise and limit motion transfer because the innerspring coils are individually-wrapped in fabric.While hybrid mattresses offer sleepers the benefits of both memory foam and innerspring, they also have drawbacks, including less pressure relief and noise potential from steel coils and heat retention from memory foam. Hybrid mattresses are also more expensive and heavy due to the amount of materials they contain.Body WeightAnother factor when deciding which mattress to buy is your current body weight. Different body types need different levels of comfort and support to keep the spine aligned.Lightweight SleepersLightweight sleepers weigh less than 130 pounds. They need a softer surface to allow their bodies to slightly sink into the mattress for pressure relief and to encourage spinal alignment. A firm mattress will create pressure points and throw the spine out of alignment.Average Weight SleepersAverage weight sleepers weigh between 130 to 230 pounds. A medium sleep surface would be best to provide a balance of comfort and support without risk of heavy sinking.Heavyweight SleepersHeavyweight sleepers weigh more than 230 pounds. The best mattresses for heavy people are typically firmer to offer needed support without sagging. Softer mattresses lack the support heavyweight sleepers need.Sleeping PositionYour preferred sleep position is a major factor in finding the best mattress. Each sleep position needs the right amount of comfort and support to conform to the body and to keep the spine in alignment.Side SleepingSide sleeping is one of the healthiest sleep positions. Side sleeping opens up airways, reduces acid reflux, and keeps the pressure off of vital organs. The best mattresses for side sleepers are medium to soft in firmness to fill in the large gaps between the body and the sleep surface— a soft to medium mattress provides enhanced pressure relief in the shoulders and hips.Back SleepingBack sleeping is another healthy sleep position because of the natural alignment of the spine through the back’s direct contact with the sleep surface. Back sleeping does come with a higher risk of developing sleep apnea— gravity causes the collapse of soft tissue at the back of the throat, blocking airways.If you’re a back sleeper or transitioning to sleeping on your back, you should look for a mattress with a medium to firm feel to give your back just enough cushion and align the spine.Stomach SleepingStomach sleeping is the least recommended sleep position because of the health risks associated with excessive pressure placed on the spine, including neck strain and back pain. It’s better to switch to side sleeping to reduce these risks.For those committed to sleeping on their stomachs, look for a medium-firm to firm mattress. A firmer feel keeps the body on top of the mattress and prevents heavy sinking. Stomach sleepers may also benefit by placing a thin pillow under their hips to better align the spine.Combination SleepingAlso known as restless sleepers, combination sleepers toss and turn most of the night, switching between 2 to 3 sleep positions. Combination sleepers experience the same benefits of each sleep position, including better breathing and natural alignment, but also face the same drawbacks (back pain, neck strain, and risk of developing sleep apnea).Combination sleepers need a medium to medium-firm mattress to maintain a balance of comfort and support.Sleep Trials, Warranties, and Return PoliciesSleep trials, warranties, and return policies reassure the customer of a sound purpose and shows the confidence a mattress manufacturer has in its product. Always read the fine print and beware of a mattress that doesn’t include a sleep trial and warranty.Sleep TrialA sleep trial is the period of time a customer has to try out a new mattress in the comfort of their own home. Sleep trials are particularly great for online mattresses since customers cannot try out the bed before they buy it like they would in a showroom. Most sleep trials last between 90 to 120 nights, depending on the brand. If the mattress doesn’t meet the customer’s expectations, most mattress companies will arrange to have the bed picked up and donated to charity before offering a full refund.WarrantyA warranty protects the mattress against manufacturing defects which could damage the mattress, and sagging greater than 1 inch— this measurement varies, depending on the brand. Most mattresses come with a standard 10-year warranty and only apply to the original purchaser.Return PolicyShould a new mattress not include a sleep trial, check out the return policy. Return policies last about 30 days— about the same amount of time it takes to adjust to a new bed. If the customer isn’t happy with the mattress, they can return it for a full refund.Other Things to ConsiderWhen’s the best time to buy a mattress?We recommend shopping for a new mattress during the popular sale weekends, including President’s Day, the 4th of July, Memorial Day, and Black Friday. Most online brands have ongoing promotions as well.How much should I pay for a good mattress?For a high-quality queen size mattress with a standard 10-year warranty, expect to pay between $1,000 to $2,000.Do all mattresses need a box spring?No, as a matter of fact, many modern mattresses should not be paired with box springs because the springs can cause damage. Innerspring mattresses can work with box springs, but hybrids, latex beds, and memory foam mattresses should be paired on solid or slatted mattress foundations.Where can I try mattresses online?A lot of online mattress brands don’t have showrooms, so they offer sleep trials to give customers an opportunity to test the bed out before deciding if they’d like to keep it. However, some online mattress brands do have showrooms, but they’re usually scattered around the country, so it may be hard to find one in your local area. If you’re interested in a particular mattress, check out the brand’s website to see if they have a showroom near you.How thick should a mattress be?Most mattresses are between 10 and 14 inches thick. 10-inch mattresses are usually firmer while thicker mattresses are usually softer. We suggest avoiding mattresses less than 8 inches thick, as they lack comfort and support and will likely break down rather quickly.ConclusionWe hope after reading this article, you have a better understanding of all the mattress features available to you as you search for the best online mattress. Our favorite is the Amerisleep AS3— a perfect medium ideal for side and combo sleepers, and priced at $1199 for a queen size.This article is for informational purposes and should not replace advice from your doctor or other medical professional. CommentsLeave a comment Adela Zahir April 8, 2020 at 12:42 pm ReplyWow, you have such a good collection of the mattress. I would like to say that last year, I bought a memory foam mattress Dubai from the Royal Rest, a well-known mattress store in UAE. They are also selling good quality mattresses like you. I saw a collection of variety mattresses there. Leave a comment Cancel replyLeave a CommentYour email address will not be published. Required fields are marked * Comment Name Email I agree to the Terms and Conditions of this website.