Sleep Number c4 Smart Bed

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Overall

#109 in

Mattress

according to Reddit Icon Reddit

Sentiment score75% positive
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Last updated: May 19, 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 Iconjohnboy2978
6 months ago

I think about $1500 but that was about 15 years ago. It's a king size dual control select comfort bed with 3 different zones that you can adjust individually. Since the zones are air bags, feels just as good today as it did new. Worth the price.

Reddit Iconcathatesrudy
6 months ago

We are on our second sleep number mattress. The first one was at least 5 years old when we got it from my mom (who I’m pretty sure got it used)and lasted us over ten years, so the choice to get another one was pretty easy. (All of the conventional mattresses we’ve had have gone soggy within a couple years and my back can’t handle that shit) The one we have is the first level up from the base model (it has a slightly upgraded control and thicker topper piece) and I think it was 1300 when I bought it last year during a sale (which the sale may have just been a deal on the financing interest, frankly I forget but it’s nearly paid off either way)

Reddit IconMaru_the_Red
10 months ago

My husband just paid the big bucks for a Sleep Number 360 with an adjustable base and it's probably the most comfortable bed I have ever slept on.

Reddit IconToxikfoxx
2 months ago

48, side sleeper. We bought a Sleep Number 360 two years ago and I’ve never slept better. The adjustable firmness, temperature controls, adjustable base. Yes it was expensive, but we’ll never go back to a normal mattress now.

Reddit Iconm155fit
3 months ago

Same, I got mine recently and it feels life changing. I love being able to adjust the firmness based on how much pain I have and that it will automatically adjust to take pressure off my pressure points. I’m not constantly changing positions anymore because I’m uncomfortable. The adjustable frame is so nice to be able to be propped up in bed without a billion pillows and being able to raise my feet when they’re hurting. My hrv and resting heart rate are actually improving since I got the bed. I think I’m getting actual restful sleep for the first time in years. It was certainly an investment but at the time I thought, if i am going to have to stay in bed, a bed was a good investment to make.

Reddit Iconbi_geek_guy
3 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 IconDirectAccountant3253
6 months ago

Sleep number king size with adjustable base. About $7,500. Absolutely best frivolous purchase we've made. Love it.

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