Mattress Buying Checklist: 20 Questions to Ask Before You Buy

Most mattress buyers make their decision after 5 minutes in a showroom or 10 minutes browsing a product page. That is not enough time to evaluate a $1,000–$3,000 purchase that will affect your sleep — and therefore your health and cognitive performance — for the next decade. This checklist gives you 20 specific questions to work through before you hand over a credit card.

The questions are organized into five categories: construction and materials, trial period, warranty, delivery and setup, and in-store or online testing methodology.

Section 1: Construction and Materials (5 Questions)

1. What is the support core made of?
Pocketed coils provide more targeted support and better motion isolation than traditional Bonnell coils. Foam support cores are durable but can sleep warm. Latex cores are the most durable and most expensive. Know what is under the comfort layers.

2. How thick is the comfort layer, and what is it made of?
The comfort layer determines how the mattress feels in the first few inches of contact. Memory foam, latex, microcoils, and polyfoam all perform differently. Thicker comfort layers (3+ inches) provide more contouring for side sleepers. Thinner comfort layers work better for stomach sleepers who need to stay close to the support core.

3. What is the foam density?
For memory foam, look for a minimum of 3 lb/ft³ for durability. Below 3 lb/ft³ is considered low-density and will break down faster. High-quality mattresses use 4–5 lb/ft³ memory foam in the comfort layers. Ask specifically — manufacturers rarely volunteer this information.

4. Is the cover removable and washable?
A removable, washable cover is a practical advantage that is easy to overlook. Check whether it zips off and whether it can be machine washed or requires dry cleaning. This matters for hygiene over the life of the mattress.

5. What firmness options are available?
Many manufacturers offer the same mattress in multiple firmness levels. If you are on the edge between two firmness recommendations, buying from a brand with multiple options means you can exchange for a different feel during the trial period. See our mattress firmness guide for how to identify your target firmness before shopping.

Section 2: Trial Period (4 Questions)

6. When does the trial period start?
Some trials start at order date, not delivery date. If your mattress takes 3 weeks to arrive, you have already lost 21 days of your trial before sleeping on it. Confirm the start date explicitly.

7. Is the refund cash or store credit?
A 100-night trial means nothing if a return gives you store credit rather than a refund to your original payment method. Confirm this in writing before purchase.

8. Who pays for return shipping?
White-glove delivery mattresses are bulky and expensive to return. Some companies charge $150–$300 for return pickup. Others offer free returns. This cost should factor into your risk calculation.

9. Is there a mandatory break-in period before returns are accepted?
Some companies require you to sleep on the mattress for a minimum of 30 nights before accepting a return. This is reasonable — most mattresses soften in the first few weeks and need time to be evaluated fairly. But it also means your trial is effectively shorter than the stated period.

Section 3: Warranty (4 Questions)

10. What is the body impression threshold?
Most warranties cover sagging or impressions deeper than 1.5 inches. A mattress can develop a visible, uncomfortable impression at 0.75 inches — below the warranty threshold — leaving you with no recourse. Look for warranties that cover impressions at 0.75 inches or less.

11. Is the warranty prorated?
A non-prorated warranty provides the same coverage in year 10 as in year 1. A prorated warranty reduces coverage over time — in year 10, the manufacturer might only cover 10% of repair or replacement costs. Read the fine print.

12. What voids the warranty?
Common warranty voiders include: using the mattress on an unsupported or incompatible base, removing the law tag, stains, and normal wear. Understand what base the manufacturer requires — some specify slatted bases with maximum gap widths.

13. What is the claims process?
Before a problem arises, understand what documentation you will need. Most claims require photos of the impression with a straight edge across the mattress. Some require professional inspection. Know the process before you need it.

Section 4: Delivery and Setup (4 Questions)

14. What does white-glove delivery include?
White-glove delivery typically means the mattress is brought into your bedroom, set up, and the packaging is removed. It does not always include removal of your old mattress. Confirm whether old mattress removal is included or available as an add-on, and whether it costs extra.

15. How long does delivery take?
Delivery timelines vary from 1 day (bed-in-a-box) to 3–6 weeks (custom or white-glove). If your current mattress is uncomfortable, your timeline affects which brands are realistic options.

16. Are there delivery restrictions for your building?
Apartment buildings with narrow elevators or stairways can make white-glove delivery impossible. Confirm the mattress dimensions, especially for king and California king sizes. See our mattress size guide for exact dimensions by size.

17. Will the mattress fit your bed frame or base?
Confirm the mattress height against your existing frame. A 14-inch mattress on a platform bed can create a sleeping surface that is 28–30 inches off the floor — potentially too high for some people. Consider the total stack height: mattress + base + frame.

Section 5: Testing Methodology (3 Questions)

18. Did you test in your primary sleep position?
Most showroom testers lie on their back out of social habit. If you are a side sleeper, spend your test time on your side. The firmness and pressure point experience are completely different by position. See our side sleeper mattress guide for what to feel for specifically.

19. Have you tested for motion transfer if sleeping with a partner?
Motion isolation is impossible to test alone. If you sleep with a partner, bring them. Have one person stay still while the other moves. Ask them if they felt the movement.

20. Have you compared at least three mattresses at different price points?
The first mattress you test becomes your reference point — which is meaningless. You need at least three data points across different price ranges and constructions before your comparisons carry useful information.

After the Checklist: Making the Decision

No checklist eliminates the uncertainty in mattress buying. The only way to truly know if a mattress works for you is to sleep on it for 30–60 nights. That is why the trial period answers matter more than most shoppers realize. A mattress with a honest, no-conditions 100-night trial from a brand with a track record of honoring it is worth more than a cheaper mattress with a problematic return process.

Our Saatva Classic review and the full mattress rankings provide detailed construction information for all the questions in Section 1 for each mattress reviewed.

Frequently Asked Questions

How long should I spend testing a mattress in a store?

Spend at least 10–15 minutes on each mattress in your primary sleep position. Your body needs time to relax before you can accurately assess pressure points. Most people spend under 3 minutes, which is not enough to detect issues that will wake you up at 3am.

Is a longer trial period always better?

A longer trial period reduces risk, but read the fine print. Check whether the trial starts from delivery or from order. Check whether a full refund is guaranteed or only store credit. Check whether you pay return shipping. Some 365-night trials come with conditions that make them less useful than a straightforward 100-night guarantee.

What warranty terms actually matter?

The body impression threshold is the most important warranty term. Most manufacturers warrant against impressions deeper than 1.5 inches — which only happens after significant visible failure. Look for warranties that cover impressions at 0.75 inches or less. Also check whether the warranty is prorated (coverage decreases over time) or non-prorated.

Do I need a box spring with a new mattress?

Most modern mattresses do not require a box spring and work on platform beds, slatted bases, or adjustable frames. However, using a mattress on an incompatible base can void the warranty. Confirm with the manufacturer before purchase.

Is the firmness on the showroom floor the same as at home?

Not exactly. Showroom mattresses are often broken in slightly from testing, and the controlled showroom environment differs from your home temperature and humidity. Some mattresses feel firmer when new and soften within the first 30–60 nights as the materials compress. This is normal and is called the break-in period.