Updated January 13, 2021If you’re a solo sleeper who tends to toss and turn, or you like having room to spread out your arms and legs, a full size mattress might be the perfect bed size for you. A full size mattress measures 54 inches by 75 inches, so it can fit in most bedrooms. It’s well suited to almost any single sleeper.We’ve compiled our recommendations for the best full size mattresses. We included other buying considerations such as mattress type, sleeping positions, and firmness level.Best Full Size MattressesBest Overall Mattress of 2021: Amerisleep AS3Best Mattress for Side and Combo Sleepers: Amerisleep AS5 HybridBest Memory Foam Mattress: Zoma MattressBest Cooling Mattress: Zoma HybridBest Budget-Friendly Mattress: Vaya MattressBest Full Size MattressesMattressHighlightsPriceAmerisleep AS3Bio-Pur® foam conforms to your body for pressure relief$944Amerisleep AS5hPocketed coils provide targeted support$1574Zoma MattressTriangulex™ provides extra pressure relief and wicks away heat$599Zoma HybridCool, pressure-relieving gel memory foam on top of responsive coils.$899Vaya MattressResponsive, latex-like foam provides support and comfort$324.99Nest Bedding Alexander Series FlippableDouble-sided mattress, with a medium and firm side$1189Tuft & Needle OriginalT&N Adaptive® foam for all sleeping positions$495Zinus Green TeaGreen tea extract keeps the bed cool and smelling fresh$2451. Amerisleep AS3Amerisleep’s most popular mattress model is the AS3, with a medium feel perfect for side sleepers and combination sleepers. The AS3 has a newer hybrid counterpart, but we’ll be focusing on the original memory foam mattress.The 12-inch AS3 has three layers of foam. All Amerisleep foams are certified by CertiPUR-US®, which means the foam was processed without toxic materials such as mercury, lead, formaldehyde, ozone depleters, and certain flame retardants.The top layer is 3 inches of Bio-Pur® memory foam, a more eco-friendly, breathable, and responsive alternative to traditional memory foam. Amerisleep manufacturers replace certain petrochemicals with plant-based substitutes to make Bio-Pur®.Next is the Affinity layer with HIVE® technology. HIVE® technology contains hundreds of hexagonal cutouts separated into five zones—your head, shoulders, back, hips, and feet. The cutouts under your shoulders and hips compress for more cushion, while the cutouts under your head, back, and feet provide support.At the bottom is 7 inches of Bio-Core® foam, a supportive material that deters sagging to extend the mattress’s lifespan. Bio-Core® is partly why Amerisleep can offer such an extensive mattress warranty.A soft, breathable cover encases the mattress, promoting airflow.A full size AS3 is currently $944, with free shipping to anywhere in the continental USA. Every Amerisleep mattress includes a risk-free 100-night sleep trial and a 20-year warranty. Amerisleep bears all costs for defective mattresses the first 10 years, and then for the next 10 years, you pay a portion of the repair or replacement costs.You can bundle an Amerisleep mattress with an adjustable base for further discounts. Amerisleep’s adjustable bed includes two full-body massagers, under-bed lighting, 8 USB charging ports, and Wallhugger® technology that keeps your nightstand within reach no matter how you position the mattress. The mattress bundle includes white glove delivery, which means the delivery team will set up your new adjustable bed and haul away your old mattress.2. Amerisleep AS5 HybridAmerisleep’s softest hybrid mattress is the 14-inch AS5 Hybrid, an excellent choice for side sleepers who want a little luxury.There are four layers in an AS5 Hybrid. On top is 3 inches of breathable, responsive Bio-Pur® memory foam. Next is 2 inches of Active Flex, a bouncy material that prevents you from feeling stuck in your soft mattress.Then, there’s an 8-inch layer of pocketed coils. The coils are grouped for extra pressure relief at the head and foot of the mattress, while the middle group of coils offers back support. At the bottom is an inch of base foam for added support.A soft, breathable cover encases the mattress, letting air flow through the bed. Firm foams surround the bed’s perimeter for edge support, making it easier for you to get in and out of bed.A plush, full size AS5 Hybrid mattress is currently $1574 with free shipping. As previously mentioned, all Amerisleep mattresses include a 100-night sleep trial and a 20-year warranty.3. Zoma MattressThe Zoma Mattress was designed to improve an athlete’s performance with a good night’s sleep, but you can sleep well on it regardless of how physically active you are. The 11-inch mattress has three foam layers.The comfort layer is 2 inches of gel memory foam with Triangulex™ technology. The contouring triangle cutouts relieve pressure points in the shoulders and legs, while the midsection provides support. The cutouts also improve airflow, working with the gel foam to keep you cool as you sleep.The next layer is 2 inches of latex-like Reactiv™ foam. Reactiv™ is a high-density foam that lets the mattress respond faster to your movements, preventing you from feeling stuck in the mattress.The base layer is 7 inches of Support+ foam, which maintains the mattress’s structure by deterring sagging.A breathable polyester-elastane cover encases the mattress. The cover stretches to create air channels as you move on it.A full size Zoma Mattress is currently $599 and comes with a risk-free 100-night trial and a 10-year warranty. The warranty includes coverage for sagging deeper than 0.75 inches.4. Zoma HybridThe creators of the Zoma Hybrid wanted a bed that could relieve pain and pressure and react quickly to your movements. After a long day, the Zoma Hybrid feels cool and refreshing. This 12-inch mattress contains four layers.The top layer is 2 inches of gel memory foam for pressure point relief. This layer also contains hundreds of triangular cutouts arranged in three support zones. The cutouts increase cushion in the leg, shoulder, and head areas for more pressure relief. And as a bonus, the cutouts also boost airflow through the mattress.The bed’s transition layer contains 2 inches of Reactiv™ foam. Reactiv™ is a springy material that adapts to your movements and limits sinkage.The support core is 7 inches of pocketed coils that rest on an inch-thick foam base. The coils are individually wrapped to minimize motion transfer, along with traditional innerspring noises such as squeaks and creaks.The price for a full size Zoma Hybrid is $899. Every Zoma mattress includes a 100-night sleep trial and a 10-year warranty.5. Vaya MattressThe Vaya Mattress was designed to offer bouncy support and pressure relief at an affordable price. It’s an all-foam mattress made for all sleepers.A Vaya Mattress has a simple two-layer design and stands 12 inches tall.The comfort layer is 3 inches of Vaya Foam, a latex-like foam that’s less dense than your typical memory foam. Vaya Foam eases pressure and is responsive enough to prevent you from feeling trapped in your mattress. The base layer is 9 inches of high-density foam that prevents sagging.The cover is a blend of rayon, spandex, and polyester.A full size Vaya Mattress is $324.99 with free shipping on Amazon. The mattress includes a 100-night sleep trial and a 10-year warranty. The warranty covers sagging greater than 0.75 inches.6. Nest Bedding Alexander Series FlippableAs the name suggests, Nest Bedding’s Alexander Signature Series® memory foam mattress is dual-sided. One side has a medium feel perfect for side sleepers and combination sleepers, and the other side is a luxury firm for back and stomach sleepers. If you’re unsure how you sleep, Nest Bedding’s mattress can help you determine your preferences.The mattress has five foam layers, all of which are encased in an organic cotton cover.Starting from the soft side down, there’s a 1-inch layer of CoolFlow™ Plush Quilting Foam on top of 2 inches of gel memory foam. CoolFlow™ provides a feeling of “weightlessness” that lets you feel supported without any pressure, according to the website.Next is 2 inches of transitional foam to add responsiveness and prevent you from bottoming out on the support layer underneath. The support layer is 7 inches of Luxury Firm base foam. An inch of CoolFlow™ foam is at the bottom, providing a firmer feel.A full-size mattress is $1,399 and includes a 100-night sleep trial and a limited lifetime warranty. The warranty covers sagging greater than an inch and flaws in the cover’s construction.7. Tuft & Needle Original MattressTuft & Needle’s original mattress contains the company’s signature T&N Adaptive® foam, a material designed to relieve pressure and support all sleepers, regardless of their sleeping style. The 10-inch mattress has two layers.The top layer is 3 inches of T&N adaptive foam, with ceramic beads and graphite to wick away body heat. Underneath is supportive foam to deter sagging. A soft polyester cover surrounds the mattress.A full size mattress costs $495, with the option to add on a $70 mattress protector. All Tuft & Needle mattresses come with a 100-night sleep trial and a 10-year limited warranty. The warranty covers sagging greater than 0.75 inches, splits or cracks in the foam, and tears in the mattress cover.8. Zinus Green Tea MattressThe Zinus Green Tea memory foam mattress has a medium-soft feel, excellent for side sleepers and petite sleepers. The mattress is available in 6-inch, 8-inch, 10-inch, and 12-inch thicknesses. We will focus on the 10-inch model.The 10-inch mattress has three foam layers. The top layer is 2.5 inches of memory foam infused with green tea extract, which keeps you cool and neutralizes odors. Next is 2 inches of pressure relief foam, which helps the memory foam contour to your body and ease pressure points. At the base is 5.5 inches of high-density support foam.The 10-inch Green Tea mattress costs $245 for a full size mattress, which includes free shipping, a 100-night sleep trial, and a 10-year warranty. The warranty covers sagging greater than 1.5 inches.Who Should Sleep on a Full Size Mattress?Full size mattresses are perfect for people who want the space to sprawl but live in a smaller bedroom—one that’s less than 10 feet by 10 feet. If you like to stretch out your arms as you sleep, a full size mattress gives you the room you need. And if you have a smaller guest room, a full mattress can still provide a visitor with a comfortable night’s rest.We must also mention who should not sleep on a full size mattress—namely, couples who want to share a bed. If you divide it in half, a full mattress provides each partner with about 27 inches of sleeping space. Even if you and your partner sleep close together, 27 inches of space is a tight squeeze. You may have difficulty falling asleep, or you’ll wake up as the other shifts in their sleep.Couples need the space that a queen size mattress or larger can offer. Don’t worry if you’re shopping on a tight budget. There are plenty of high-quality queen mattresses costing less than $1000.More Bed SizesPerhaps a full size mattress isn’t suited for your needs—maybe you’re looking for a smaller mattress for a child that’s leaving their crib behind, or you need the best mattress for a couple to share. If so, there are five other standard bed sizes to consider.TwinMeasurements: 38 inches by 75 inchesA twin mattress is the smallest standard size. It’s well suited for children moving out of a crib or toddler bed or adult sleepers who need a mattress for a small bedroom.Twin XLMeasurements: 38 inches by 80 inchesA twin XL mattress offers 5 more inches of legroom than a standard twin mattress. If you want your child to have a mattress that can accommodate growth spurts or are a tall adult sleeper, a twin XL mattress might be the perfect choice.QueenMeasurements: 60 inches by 80 inchesA queen mattress is the most popular bed size, as it suits couples and single sleepers and fits into most budgets and most bedrooms. However, some couples may want a larger mattress and should look at a king or California king size mattress.KingMeasurements: 76 inches by 80 inchesA king mattress is the widest standard size available. It offers the most personal space for couples, or even for single sleepers who want the luxury of spreading out.If you and your partner can’t agree on how firm your bed should be, consider a split king mattress. A split king is a king size mattress separated into two halves, each half the same size as twin XL mattress.California KingMeasurements: 72 inches by 84 inchesA California king mattress, also known as a western king, is the longest standard size mattress. It’s an excellent choice for couples who need extra legroom or single sleepers taller than 6 feet.Other Mattress Buying ConsiderationsDoing research can simplify your mattress shopping, as you’ll know exactly what you’re looking for in your next mattress. Knowing the type of mattress you want, your favorite sleeping position, and the best firmness for you will make mattress comparisons easier.Mattress TypesA mattress’s material contributes to its feel, costs, and expected lifespan. Every material comes with its pros and cons.Memory FoamMemory foam is a popular mattress material thanks to its conforming, pressure-relieving properties. When you lie down on a memory foam mattress, it responds to your heat and weight, molding around your body.Memory foam is also one of the quieter mattress materials, with nothing creaking as you move. And if you share a memory foam bed with a partner, neither of you will be disturbed by the other’s movements, since memory foam absorbs motion at the point of impact.The drawback to traditional memory foam is its heat retention, which can wake you if the mattress grows too hot. Many mattress companies add infusions such as cooling gel, graphite, ceramic, and charcoal to wick away body heat.Memory foam mattresses can last 7 to 10 years, depending on the foam’s quality. You can find memory foam mattresses at almost every price point.LatexLatex conforms to the body for pressure relief, much like memory foam. However, unlike memory foam, latex is naturally cooler and firmer—some companies include an optional pillow top for a softer mattress.There are two types of latex foam: natural and synthetic. Natural latex is made by harvesting rubber tree sap and whipping it into foam, while synthetic latex is made from organic chemical compounds.Natural latex mattresses are often expensive because of production costs, but many shoppers find the price worth it as a natural latex mattress can last 15 or more years with care. Synthetic latex mattresses cost less, but they also have a shorter lifespan.InnerspringInnerspring mattresses, also called coil mattresses, remain popular through familiarity and wide availability—you can find an innerspring model at most mattress stores and many furniture stores. The construction is simple, with an interior coil layer sandwiched between foam or fabric cushioning.Many owners are dissatisfied by how little pressure relief the traditional innerspring mattress offers. Some manufacturers add a Euro or pillow top to create a softer mattress—the difference between the two is that a pillow top mattress has the additional padding sewn on top of the mattress with a visible gap, while a Euro top is placed under the mattress cover for a uniform appearance.The other drawback to an innerspring mattress is its lifespan. Many do not last more than five or six years.HybridHybrid mattresses combine pressure-relieving foam with the bouncy, cooling coils of an innerspring mattress. The idea is to have the benefits of a foam and innerspring mattress while minimizing both of their drawbacks. To qualify as a hybrid, the mattress needs at least two inches of foam.Hybrid mattresses can suffer from the drawbacks of an innerspring and foam mattress—the dense foam layer can still retain body heat, and the coils tend to sag within six to seven years. Quality hybrid mattresses are often one of the more expensive mattresses since they contain a high amount of materials.Sleeping PositionsYour sleeping position can affect what mattress you should buy because each position is best suited to different firmness options. Your sleeping position isn’t just about feeling comfortable, as you need to make sure your spine remains neutral.Side SleepingSide sleeping is the most common sleep position, with plenty of health benefits. You breathe better lying on your side, as the soft tissue at the back of your throat is less likely to block your airway. And sleeping on your right side reduces pressure on your heart.Soft and medium mattresses for side sleepers are usually best, as they’re plush enough to cushion the shoulders and hips. However, you don’t want a mattress that’s so soft it causes your spine to bow, as this can lead to back pain.Back SleepingBack sleeping may be the best position for your spine, maintaining neutral alignment. However, if you’re a back sleeper, you’re more likely to experience symptoms of acid reflux, snoring, and sleep apnea. When you lie flat on your back, it’s easier for the soft tissue at the back of your throat to collapse, interrupting your breathing. Similarly, lying on your back means it’s easier for the contents of your stomach to flow up your esophagus.If you snore or have sleep apnea, but can’t fall asleep unless you’re on your back, try an adjustable base or wedge pillow to elevate your upper body. Most back sleepers sleep best on a medium-firm to firm mattress, although some do find medium mattresses with added back support comfortable.Stomach SleepingStomach sleeping is the least common sleep position and not recommended since it can leave you waking up in pain. Sleeping on your stomach stretches your spine out of alignment when gravity pushes down on your stomach. You may also wake up with neck pain from twisting your neck at an awkward angle to breathe as you sleep.If you can’t feel comfortable enough in another position to fall asleep, look for a mattress with a medium-firm to firm feel to prevent sinkage. As a further precaution, you can keep a pillow under your stomach and use a thin head pillow.Combination SleepingCombination sleepers move between two or all three sleeping positions in the night. They can sleep comfortably on most mattresses, but the best mattress for a combination sleeper is one that suits their dominant sleeping position.If you don’t know what your dominant position is, keep track of how you tend to wake up. If you’re still unsure what the best mattress firmness for you is, try a medium mattress for a balanced feel.Mattress FirmnessThe best firmness level for you will depend on your sleeping position, body type, and personal preferences.Our sleeping position section details the best firmness for each position. Your body weight is another factor, as heavier sleepers need a firmer mattress to withstand their weight, while petite sleepers need a softer mattress to relieve pressure points. You qualify as a heavy sleeper if you weigh more than 230 pounds and as a petite sleeper if you weigh less than 130 pounds.If you’re buying a bed in a box mattress online and want an idea of how it feels, read customer reviews. See what previous customers had to say about the mattress, particularly those who owned the mattress for three months or more.Sleep Trials, Warranties, and Return PoliciesReading through an attached sleep trial, warranty, or return policy gives you an idea of the mattress’s quality. If the company includes a short warranty or only accepts returns under limited circumstances, it might lack confidence in its product’s quality.Sleep TrialOnline mattress companies popularized sleep trials, which let you try out your new mattress in the comfort of your home. Most trial periods last 90 to 120 days and start once the mattress has been delivered.If you are not happy with your mattress during the sleep trial, the company will often help you donate it and give you a full refund. The mattress company may ask that you wait a month before returning or exchanging your mattress, as you may need the time to adjust to your bed.WarrantiesIf a mattress doesn’t include a warranty, we strongly recommend you do not purchase as you would be buying a mattress without protections. Warranties guarantee coverage for manufacturing and quality defects, such as sagging beyond a certain depth (usually an inch). You need a proof of purchase to make a warranty claim, so hang onto your receipt.Read through the details of the warranty to see what’s covered and what can void your warranty—warranties are void if liquid spills onto the mattress or if the bed frame doesn’t offer enough support, leading to premature sagging. Protect your mattress against liquid damage by encasing it in a mattress protector.Return PoliciesIf the return policy is not paired with a sleep trial, you typically have 30 days to return a mattress. As people often adjust to a mattress within a month, a 30-day return policy still gives you the chance to discover how well you sleep on a new bed. Don’t forget to read through the return policy to learn the conditions under which you can make a return.Other Things to ConsiderWhat is the best bed size for couples?We suggest a queen or king size bed for couples. A full mattress is not recommended because each partner would have about 27 inches of space, which would be quite the narrow fit for many couples. Queen mattresses are more popular than king mattresses, as they are less expensive and fit in smaller bedrooms.Is it good to sleep on a firm mattress?Whether or not a firm mattress is right for you depends on your body type and sleeping position. If you’re a side sleeper or you weigh less than 130 pounds, a firm mattress is probably not a good choice. If you’re a back or stomach sleeper or someone who weighs more than 230 pounds, a firm mattress may be perfect for you.Should I keep my mattress on a box spring?If you choose an innerspring mattress, you can place it on a box spring if you wish. All-foam beds should not be kept on a box spring, as the box spring’s inner coils are not close enough to provide support and prevent sagging. Hybrid mattresses can vary, but most do not need to be kept on a box spring.What’s the average cost of a full size mattress?Most high-quality full size mattresses cost anywhere between $700 to $1,500. You may be able to find some in the $500 range, but we don’t suggest buying mattresses priced any lower than $500. When determining if your bed is a good value, compare its price to its features. If it seems like you’re paying a lot of money for a bed that’s rather basic, consider other options, instead.How do I know my mattress size?To find the size of your current mattress, grab a tape measure and measure its length and width. Then, take a look at a mattress size guide and see which size coincides with your measurements.ConclusionFull size mattresses offer 16 more inches of sleeping space than a twin mattress, leaving a solo sleeper with plenty of room to sprawl. However, the bed size does not provide enough space for more than one person. If you want a bed large enough to share with someone else, look at a queen or king size mattress.This article is for informational purposes and should not replace advice from your doctor or other medical professional. Comments 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.