How to Choose a Mattress
Learn how to choose a mattress step by step. Match your sleeping position, body weight, and budget to the right type, firmness, and features.
We put off buying a new mattress for way too long. The old one had a visible dip in the middle, we woke up stiff most mornings, and we kept telling ourselves it was fine. It was not fine.
When we finally started shopping, we realized why people procrastinate on this. There are dozens of types, firmness levels, materials, and brands all claiming to be the best. The showroom experience is overwhelming and the online options are endless. It is genuinely hard to know what you actually need versus what marketing is telling you to want.
Choosing a mattress does not have to be complicated once you know the few factors that actually matter. Your sleeping position, your body weight, and a handful of practical features will narrow the field from hundreds of options to a short list pretty quickly. The CDC reports that over 30% of American adults are not getting enough sleep, and while a mattress will not fix everything, sleeping on the wrong one makes it a lot harder to get the rest you need.
This guide walks you through the whole process, from figuring out what your body needs to reading the fine print before you buy.
Start with your sleeping position
Your sleeping position drives everything else, because it determines where your body needs support and where it needs cushioning. Side sleepers need a softer surface. Your hips and shoulders carry most of your weight in this position, and a mattress that is too firm will create pressure points that leave you tossing all night. Look for something in the soft to medium range that lets those joints sink in while still keeping your spine straight. Back sleepers need medium to medium-firm support. Your weight is distributed more evenly, but your lower back still needs the mattress to fill the natural curve of your spine. Too soft and your hips sink too far. Too firm and there is a gap under your lower back. Stomach sleepers need the firmest surface. A soft mattress lets your pelvis drop, which hyperextends your spine and almost guarantees you will wake up with lower back pain. Medium-firm to firm keeps everything aligned. If you switch positions throughout the night, aim for medium. It is the most forgiving across all positions.
Good to know: Not sure what position you sleep in most? Pay attention to how you wake up over the next few mornings. The position you wake up in is usually the one your body settles into for the longest stretch.
Learn the main mattress types
There are five main types of mattresses, and each one has a distinct feel. Knowing the basics will save you from getting overwhelmed by marketing language. Innerspring mattresses use steel coils for support with a thin layer of foam or fiber on top. They are the most affordable option, sleep cool because air flows through the coils, and feel bouncy and responsive. The downside is that they do not isolate motion well, so if your partner moves around, you will feel it. Memory foam mattresses are all foam, no coils. They contour closely to your body shape, which makes them excellent for pressure relief and motion isolation. The tradeoff is that they trap heat and can feel like you are sinking into the bed rather than sleeping on top of it. Latex mattresses use natural or synthetic rubber. They are the most durable type, naturally breathable, and have a responsive bounce that feels very different from memory foam. They are also the most expensive foam option. Hybrid mattresses combine a coil support core with several inches of foam or latex on top. They aim to give you the airflow and bounce of springs with the contouring and motion isolation of foam. They are versatile but tend to be heavier and pricier. Adjustable air mattresses use air chambers you can inflate or deflate with a remote. Each side can be set independently, which is great for couples who disagree on firmness. They cost the most and have mechanical parts that can eventually fail.
Factor in your body weight
Your weight changes how a mattress feels underneath you. Two people can lie on the exact same mattress and have completely different experiences based on how much they weigh. If you are under 130 pounds, you will not compress the mattress as much. A mattress labeled "medium-firm" might feel genuinely firm to you because you are not heavy enough to engage the comfort layers. Go a step softer than the standard recommendation for your sleeping position. If you are between 130 and 230 pounds, the standard firmness guidelines work well for you. Most mattresses are designed and tested for this weight range. If you are over 230 pounds, you will sink deeper into any mattress. A "medium" feel might let your hips drop too far, especially on all-foam beds. Go a step firmer than the standard recommendation. Look for high-density foams and thicker comfort layers, because low-density materials will break down faster under more weight. A systematic review of 39 studies published in the Journal of Orthopaedics and Traumatology found that medium-firm mattresses reduced back pain by about 48% and improved sleep quality by 55% over 28 days. But "medium-firm" is relative to your body. What feels medium-firm to someone who weighs 150 pounds will not feel the same to someone who weighs 250.
Heads up: Do not rely on firmness labels alone. There is no industry standard for what "medium" or "firm" means. One brand's medium might be another brand's medium-soft. Always test or use a generous sleep trial.
Decide what other features matter to you
Beyond firmness and type, there are a handful of features that can make or break your experience depending on your situation. If you sleep hot, temperature regulation should be near the top of your list. Innerspring and hybrid mattresses sleep coolest because air moves through the coils. All-foam beds trap the most heat. If you love the feel of memory foam but run warm, look for gel-infused or open-cell foam and a breathable cover. If you share the bed with a partner, motion isolation matters. Memory foam absorbs movement so well that you can barely feel the other person getting up. Innerspring with interconnected coils is the worst for this. Hybrids with pocketed coils fall somewhere in the middle. If you sit on the edge of the bed to put on shoes, or if you and your partner use the full width of the mattress, edge support matters. Coil-based mattresses handle this better because the perimeter is reinforced. All-foam beds tend to compress and feel unstable at the edges. The Sleep Foundation's mattress guide breaks down how each of these features varies by type if you want to compare them side by side.
Set a realistic budget
You do not need to spend a fortune, but you should not buy the cheapest option either. A mattress you sleep on every night for the better part of a decade is not the place to cut corners. As a general range for a queen-size mattress, expect to pay around $600 to $1,100 for a good innerspring, $900 to $1,300 for memory foam, $1,500 to $2,000 for a hybrid or latex, and $2,000 or more for an adjustable air bed. Think about it in terms of cost per night. A $1,200 mattress that lasts eight years costs about 41 cents a night. A $400 mattress that breaks down in three years costs 37 cents a night but gives you worse sleep for all of those nights and then needs replacing sooner. Online mattress brands are generally less expensive than what you will find in traditional stores. They cut out the showroom overhead and pass part of the savings along. That said, some in-store brands regularly run sales that bring prices down significantly, so do not assume online is always cheaper. Watch for holiday sales. Presidents' Day, Memorial Day, Labor Day, and Black Friday consistently have the deepest mattress discounts of the year.
Good to know: If a deal sounds too good to be true, check the foam density. Mattresses under $500 often use low-density foams (under 1.5 pounds per cubic foot) that sag and lose support within two to three years.
Test the mattress properly
If you are shopping in a store, do not just sit on the edge and bounce. Lie down in your actual sleeping position for at least 10 to 15 minutes. Yes, it feels awkward. Do it anyway. Five seconds of sitting tells you almost nothing about how a mattress will feel after six hours. Bring your own pillow if you can. The store pillows are designed to make every mattress feel good. Your actual pillow changes the alignment of your neck and shoulders, which changes how the mattress feels underneath you. If you are buying online, the sleep trial is your testing period. Most online brands offer 90 to 365 nights to try the mattress at home with a full refund if you do not like it. This is actually a better test than any showroom, because you are sleeping on it in real conditions for real nights. Give an online mattress at least three to four weeks before you decide. New mattresses need time to break in, and your body needs time to adjust. The first few nights on a different surface almost always feel a little off, even when the mattress is right for you.
Read the return policy and warranty before you buy
Not all sleep trials and warranties are created equal, and the differences are in the details. For sleep trials, check whether the company charges return shipping. Some brands offer free returns, but others charge $100 or more to pick the mattress up. Look for restocking fees too. And confirm whether there is a mandatory break-in period before you are allowed to return it. Some brands require 30 nights of use first. For warranties, look at what is actually covered. Most warranties cover manufacturing defects and sagging beyond a certain depth, usually 1 to 1.5 inches. Normal wear and comfort preference changes are almost never covered. Check whether the warranty is prorated. A prorated warranty decreases in value over time, so by year seven you might only get a fraction of the original price covered. Read reviews from people who actually went through the return process. A generous trial period on paper means nothing if the company makes returns difficult in practice.
Heads up: Keep the tags and original packaging until you are sure you are keeping the mattress. Some companies require the law tags to be intact for warranty claims, and a few online brands ask for the original box or bag for returns.
Buying a mattress feels like a bigger decision than it should, mostly because you cannot undo it easily and you are going to spend a third of your life on it. But if you have worked through these steps, you already know what to look for. Start with your sleeping position and body weight to narrow the firmness range. Pick the type that fits your priorities. Set a budget, test it properly, and read the return policy before you hand over your credit card. That is really all there is to it. The perfect mattress is not the one with the best reviews or the highest price tag. It is the one that keeps your spine aligned, does not make you overheat, and lets you wake up without stiffness. Trust your body over the marketing.
Questions we get asked about this
Answers from experience, not a textbook.
How long a mattress lasts depends mostly on its type. Innerspring mattresses tend to last 5 to 6 years, memory foam 6 to 7 years, hybrids 6.5 to 7.5 years, and latex 7.5 to 8.5 years. Signs that it is time to replace yours include visible sagging, waking up with pain or stiffness that goes away during the day, and consistently poor sleep despite no other changes in your routine. Rotating your mattress 180 degrees every three to six months can help extend its life.
Medium-firm is the best option for most people with back pain. A systematic review of 39 studies published in the Journal of Orthopaedics and Traumatology found that medium-firm mattresses reduced back pain by approximately 48% and improved sleep quality by 55% after 28 days of use. A mattress that is too firm creates pressure points at the hips and shoulders. One that is too soft allows the spine to fall out of alignment. Medium-firm provides enough support to keep the spine neutral while still cushioning the body's curves.
Yes. Most online mattress brands offer sleep trials that let you try the mattress at home for 90 to 365 nights. If you do not like it, you can return it for a full refund. This is actually a better test than lying on a mattress in a store for a few minutes, because you are sleeping on it in your real conditions for real nights. Some brands require a 30-night break-in period before you can initiate a return. Check whether return shipping is free or if the company charges a pickup or restocking fee.
It depends on who sleeps in it and how big your bedroom is. A twin (38 by 75 inches) works for a single child or teen. Twin XL (38 by 80 inches) is better for taller single adults. Full or double (54 by 75 inches) suits a single adult who wants more room. Queen (60 by 80 inches) gives two people room without dominating an average bedroom. King (76 by 80 inches) gives couples maximum space and works well for families who co-sleep. Allow at least 24 inches of clearance on each side of the bed and at the foot for walking space.
Generally yes, but price alone is not a reliable indicator of durability. What matters most is the density and quality of the materials inside. High-density foams (1.8 pounds per cubic foot and above) last significantly longer than low-density foams (under 1.5 pounds per cubic foot) regardless of the brand name on the label. A $500 mattress with low-density foam might sag within two to three years, while a $1,200 mattress with high-density materials can last eight years or more. Look at the foam density specs rather than the price tag when comparing durability.