Sleep Number

ComfortMode™ Mattress

Sleep Number ComfortMode™ Mattress

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Overall

#215 in

Mattress

according to Reddit Icon Reddit

Sentiment score64% positive
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Last updated: Apr 23, 2026

Reddit Reviews

Reddit IconCamelHairy
10 months ago

Take a look at Sleep Number. They have a free 100-day inhome trial. 15 year warranty. Our first a full lasted 25 years, its replacement a queen is now past 5 years. https://www.sleepnumber.com

10 months ago

Take a look at Sleep Number. It's an infinitely adjustable air mattress. Our first a full lasted 25 years, it's replacement a queen now going past 5 years. They offer a 100-day in-home trial and a 15-year warranty.

Reddit IconsenderPath
about 2 months ago

My experience was just the opposite. I had a sleep number bed that had foam edge support and it just not very good at all on the edge. I was sliding off like crazy. I replaced it with a sterns and Foster lux estate that has special coils on the perimeter and it seems to be much better. I haven’t had it as long though.

2 months ago

I’ll chime in about using foam for edge support in a mattress. I had a sleep number mattress for years and the cover stretched so that the mattress tended to overhang the boxspring. Also, the edge support was a block of hard foam. As the years went by the hard foam just sagged in the spot where I sat to put on my shoes so I would have to find other spots to sit until I was sitting at the foot of the bed and that didn’t even work anymore. I also had to keep shoving the mattress over so it wouldn’t overhang at the edge where I sat. When it was time for me to buy a new mattress, I found one that had a special surround of springs on the edge to give a different kind of edge support. It’s too soon to know how it’ll hold up but no way I was going to buy another one with hard foam around the edge.

Reddit IconFlat_6_Theory
2 months ago

Using a firmness adjustable cooling mattress from Sleep Number. Keep it dialed up pretty dang firm because if I sink down there’s gonna be serious back pain waiting to greet me in the morning. Wife says it’s like a board, lol.

Reddit IconAnneisabitch
6 months ago

I had a king size sleep number for about two days. No one tells you the king size has a huge, uncomfortable bar down the middle and no matter what you do, the air mattress pushes you towards that bar. You can’t fix air mattress physics. Also, it’s not everything but sex on two twin air mattresses glued together sucks.

Reddit IconAreYouSerious3570
7 months ago

I am a side sleeper as well and I sleep with a CPAP mask on. The most comfortable mattress I’ve used is a Stearns & Foster pillow top. Very comfortable and support. Also consider an adjustable base. The sleep number mattresses and base are amazing also because you can adjust the settings. My life goal is to get one.

Reddit Icona_rial3
8 months ago

Cannot recommend sleep number enough for you situation

Reddit IconArianaPetite1
12 months ago

I like my Nectar mattress that I got on Amazon for less than $700. I prefer it x100 to the SleepNumber that I spent thousands on.

Reddit IconAwkward_Cellist6541
7 months ago

Love our Sleep Number. We’ve had it 5 years or so.

Rankings by Use Case

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Best for Ease of movement & sex

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Best for Heavy & plus-size sleepers

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Individuals with higher body weights (typically 230 lbs or more) who find that standard mattresses quickly sag, lose support, and cause back or joint pain.
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Best for Hot sleepers

Purple - The Purple Mattress

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Individuals who consistently wake up feeling hot or sweaty, and find that their mattress absorbs and retains body heat throughout the night.
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Best for Long-term durability

SleepOnLatex - Pure Green Organic Latex Mattress

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SleepOnLatex - Pure Green Organic Latex Mattress

Buyers who view a mattress as a long-term investment and want to purchase one that will maintain its support and comfort for over a decade, prioritizing total cost of ownership over a low initial price.
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Best for Motion isolation for couples

Helix - Midnight Luxe

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Helix - Midnight Luxe

Couples or co-sleepers who are easily woken up by a partner's tossing, turning, or getting in and out of bed.
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Best for Natural & organic materials

SleepOnLatex - Pure Green Organic Latex Mattress

Top pick

SleepOnLatex - Pure Green Organic Latex Mattress

Health-conscious individuals or those with chemical sensitivities who want to avoid synthetic foams, chemical off-gassing, and potentially hazardous materials like fiberglass in their sleep environment.
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