Sleep Number c4 Smart Bed

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Overall

#142 in

Mattress

according to Reddit Icon Reddit

Sentiment score70% positive
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Last updated: Apr 28, 2026

Reddit Reviews

Reddit Icongettinchickiewitit
6 months ago

We went through this a while back. We went to the mattress store and found what seemed like a good inner spring mattress. We did not like it and ended up sending it back within a month. Then we ordered a soft foam mattress. It was ok for a while, but ended up being too soft and hurting my back. We finally decided to order a Sleep Number bed, and gave the too soft mattress to our daughter. The Sleep Number has been great. You are not locked into any level of firmness or softness because you can adjust it. It has a feature that adjusts the firmness automatically when you roll to your side. We got one of the cheaper Sleep Numbers (I believe it is the C4 series). It is not one that you can raise the head and feet, and does not have any crazy features like temperature control or anything. You do have to buy the integrated box springs with it because the air pumps sit in the base. They can be a bit pricey, so watch for a sale (they have them often.) It looks like right at this second you could get the C4 Queen and base for about $2000.

Reddit Icon17399371
4 months ago

We've got a split head Sleep Number and it's been great. Can adjust firmness easily. Can put a pad on it if you want. Has really worked out for us.

Reddit Iconbi_geek_guy
2 months ago

I’m not a Sleep Number shill, I promise. I bought one eighteen months ago with an adjustable frame and I’ve never slept better. I wake in the same position that I fell asleep in with no pressure point aches or pain and head up so no more GERD wake ups. They are not cheap, but I got what I paid for.

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 Hot sleepers

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Best for Long-term durability

SleepOnLatex - Pure Green Organic Latex Mattress

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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

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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

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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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