A step-by-step mattress shopping checklist, from working out how you actually sleep to reading the trial, return and warranty terms before money changes hands.

This article is general information about everyday health habits, not medical advice. If you have a health condition, are pregnant or take regular medication, talk to your doctor or another qualified health professional before making big changes to your diet, activity or sleep. Figures come from US public health sources such as the CDC, HHS and the Dietary Guidelines for Americans.

A mattress is one of the few purchases you use for a third of every day, and mattress shopping comes wrapped in sales claims, trial periods and fine print. A checklist keeps the process practical: work out how you actually sleep, match that to the general firmness guidance, then read the trial and warranty terms before money changes hands. If you are shopping because your sleep has gone downhill, our guide to how much sleep adults need is a sensible first stop, since poor rest does not always point to the bed.

First, Figure Out How You Actually Sleep

People often misjudge how they sleep. The position you fall asleep in is frequently different from the one you spend most of the night in, and the second one is the job your mattress has to do. Run through this before you shop.

• Track your position for a few nights. The hours you spend in it, not the minutes before dozing off, are what matter.
• Notice how you wake up. A numb arm or an aching hip most mornings points to pressure spots.
• Factor in body size. A petite person or a child may find the same mattress firm that a larger person finds soft, so any firmness score is only a starting point.
• Count how often you move. Frequent position changes make responsiveness matter as much as firmness.

Firmness and Sleep Position: What the General Guidance Says

Most companies rate firmness on a scale of 1 to 10, with 10 the firmest, and the scores are not standardized across brands. Here is the broad pattern the guidance points to:

• Lean medium unless you have a reason not to. One common testing framework rates medium and medium-firm beds as suitable for all sleep positions and body weights up to 300 pounds, and puts the vast majority of sleepers at medium-firm.
• Separate firmness from support. Firmness is how the surface feels in the first thirty seconds. Support is whether the mattress holds your spine level for hours, and a very firm bed can still support a side sleeper badly.

Materials and What They Mean for Durability

• Ask what each layer is made of and how thick it is. Foam, coils, latex and covers all feel and wear differently, and a seller who cannot explain the layers in plain language is telling you something.
• Check that “new” means new. The FTC and several states have taken law enforcement action against resellers who sold used mattresses as new or failed to sanitize them, and some states require labels on used bedding that disclose how much of the material is used.
• Do not over-read the showroom. Ten minutes on a display bed, fully clothed, tells you little about a full night, which is exactly what home trials are for.

Trial Periods, Return Fees and the Fine Print

• Ask how long the trial lasts and when the clock starts. It may begin on the delivery date, not the first night you actually slept on it.
• Ask what a return really costs. Pickup fees, restocking fees and original shipping can turn an advertised free return into an expensive one.
• Research an unfamiliar online seller first. The FTC recommends searching the company name along with words like “review,” “complaint” or “scam,” then reading what comes up.
• Read product descriptions carefully. The FTC also cautions that name-brand goods offered at steeply discounted prices may be fakes.
• Keep every piece of paperwork. Receipts, warranty copies and notes from phone calls matter if something goes wrong, and a written complaint letter puts your case on record with the company and helps preserve your legal rights.

Small step: If a dispute comes up, send your complaint letter by certified mail with a return receipt. That gives you proof the company received it and who signed for it.

Warranties: What They Cover and What They Don’t

• Know the law behind the promise. The Magnuson-Moss Warranty Act is the federal law governing warranties on consumer products, and it requires written warranties to be titled as either “full” or “limited.”
• Read which kind you are getting. A full warranty is the stronger promise. A limited warranty covers less, so check which parts, which defects and what time periods each term applies to.
• Ask about implied warranties. These are unspoken, unwritten promises created by state law, and the rules vary by state, so your state attorney general’s office is the right place for specifics.
• Expect the terms before you buy. Federal rules require sellers to make written warranty terms available before the sale, so ask for them if they are not offered.

How Much Is Reasonable to Spend

• Set a budget before you browse. Showrooms are built to move you upward, and a number written down ahead of time is the simplest defense.
• Compare the whole package, not the sticker. Delivery, setup, a frame or foundation and any return fees all belong in the total.
• Know where typical prices land. Our breakdown of what a good night’s sleep really costs runs through the usual price ranges by size and material.
• Read financing offers twice. Promotional plans can add real cost if the balance is not paid off within the promotional window.
• Remember that prices are set by sellers. The FTC moved to block a $4 billion acquisition in the mattress industry, arguing in part that it could raise prices for millions of consumers.
• Skip nothing that costs nothing. No mattress replaces a steady routine, and our evening wind-down routine is a good template for the hours before bed.

What to Do With Your Old Mattress

• Check donation and recycling options before you assume. Programs vary a lot by city and county, so call ahead rather than leaving it at the curb.
• Ask the retailer about haul-away. Some delivery services will take the old bed, sometimes for a fee.
• Be honest if it changes hands. Some states regulate how used bedding is sold and labeled, and sellers have been fined for passing off used mattresses as new, so describe any secondhand sale accurately and check your state’s requirements.

Still wondering?