The Sleep Number 360® beds are two of the softest and most plush beds from Sleep Number. They’re part of the “Innovative Series,” named as such because of unique temperature-balancing technology used in their comfort layers to regulate heat. In addition to retaining heat, these beds offer a lot of other luxurious features. This series also includes the i7 bed, but for today, we’re going to be doing a deep dive into the i8 and i10 models.
Before we discuss the key similarities and differences between the Sleep Number 360® i8 and i10, here’s some quick background on Sleep Number in case you’re not familiar with the bedding brand.
Sleep Number 360® i8 vs Sleep Number 360® i10
Product
Firmness
Score
Sleep Number 360® i8 vs Sleep Number 360® i10
Product
Sleep Number 360 i8 Smart Mattress
Firmness
Multiple firmness options
Score
Product
Sleep Number 360 i10 Smart Mattress
Firmness
Multiple firmness options
Score
Sleep Number 360® i8 vs. 360® i10 Mattress Overview
Here’s a brief overview of the strong points of the Sleep Number 360 i8 and i10, as well as which type of sleepers are best suited for them.
| Sleep Number 360 i8 is best for… | Sleep Number 360 i10 is best for… |
| Hot sleepers | Hot sleepers |
| Back sleepers | Back sleepers |
| Side sleepers | Couples |
Sleep Number 360® i8 vs. 360® i10: Top Similarities
- Adjustability: All Sleep Number beds allow you to inflate or deflate air automatically to adjust the amount of pressure in the bed and find the exact level of support you need. In addition to this feature, all the 360® beds (i8 and i10 included!) also have a Responsive Air™ technology. This technology senses your movements and automatically adjust the bed’s firmness, comfort, and support via pressure sensors inside the bed while you sleep.
- Feel: You can tell how soft or firm a Sleep Number bed will be by looking at its model number. “10” in i10 is the highest number in the series, so it’ll come with the most cushion. While these beds have slightly different comfort layers (more on that below) they both will feel really soft — making them good options for back sleepers who can get away with plush, all-around support.
- Warranty: Both beds come with a 15 Year Limited Warranty. The fine print says that Sleep Number will repair or replace your bed if there’s a defect that isn’t caused by human error for the first two years.
Sleep Number 360® i8 vs. 360® i10: Top Differences
- Price: The Sleep Number 360 i8 is cheaper than the 360 i10. The 360 i10 is the most premium bed in the Sleep Number 360 line; before any discounts a queen-sized i10 will set you back $5,499.
- Mattress Profile: The i10 bed mattress profile is 13”, while the i8 bed is 12”. The profile is measured from the base to the top of the mattress.
Sleep Number 360® i8 vs. 360® i10: Construction & Feel Differences
Now that the main similarities and differences between the i8 and i10 are out of the way, let’s focus on what these beds feel like. To find out how these beds feel, we’re going to examine each mattress for a variety of factors, including firmness level, pressure relief, sinkage, motion transfer, and bounce.
What’s the Firmness Difference?
When it comes to mattresses, firmness isn’t a one-size-fits-all scenario. Your size, weight, shape, and other factors all determine your ideal level of firmness, meaning your preferences will likely differ from mine. When testing a mattress for firmness, we try to capture the variance different people might feel. I test every bed with colleagues of various body shapes, types, and sizes, then average those responses to determine the final firmness score.
Sleep Number mattresses are adjustable air beds that offer different mattress covers that provide various levels of contouring support. Because the mattress is filled with air, you can adjust the amount of air in the chamber and find your Sleep Number setting, a number between 1-100 that dictates how hard or soft your bed will feel. You can adjust your sleep setting with a remote or app.
Additionally, the i8 and i10 models are part of Sleep Numbers smart bed series. In addition to being able to adjust your side of the bed to your exact liking, the mattress can also read your sleep movements and adjust the support automatically. Other perks include foot warming, sleep tracking, massaging, and more.
What Does Each Mattress Feel Like?
These beds will feel super similar. With the i10 having one extra inch of comfort layer, you’ll probably be able to feel that extra bit of plush support. That said, I was interested to learn that neither of these beds was reviewed as way too soft, leading people to sink directly into the mattress. Instead, customers noted that the foam on top is “just the right amount of sink in softness” and the support of the air chamber with a slightly higher Sleep Number setting balanced out the soft comfort layer very well. Both focus on providing ample and targeted pressure relief.
If you want to go for the cheaper option and don’t mind a little extra firmness, I would recommend the 360 i8. It might be hard to really feel the difference between six and seven inches of comfort foam. If “slightly less” will save you a good chunk of money, the i8 might be your best bet. Additionally, if you’re not sleeping with a partner, the i8 offers smaller bed sizes with just one air chamber.
However, the 360 i10 is for those who want the entire package. The i10 model has all the bells and whistles, is the biggest bed, and will have the plushest feel. If you want to go all-in, this bed should be your be your choice! I also think it’s a great option for sleepers who tend to get hot at night. While both beds do a great job at regulating temperature, the i10 knocked it out of the park with customer reviews that spoke to the bed keeping cool.
Sleep Number 360 i10 Smart Mattress
Out of all the Sleep Number beds, the 360® i10 is the heftiest if you look at its size, comfort foam layer, and price tag.
Read Sleep Number 360 i10 Smart Mattress Review
Material
Other
Trial Period
100 nights
Shipping Method
Flat-rate white glove delivery
Firmness
Multiple firmness options
Warranty
15-year limited warranty
Price Range
$$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.Financing Options
Financing options are available for this mattress.
Sleep Number 360 i10 Smart Mattress
Out of all the Sleep Number beds, the 360® i10 is the heftiest if you look at its size, comfort foam layer, and price tag.
Read Sleep Number 360 i10 Smart Mattress Review
Material
Other
Warranty
15-year limited warranty
Firmness
Multiple firmness options
Shipping Method
Flat-rate white glove delivery
Trial Period
100 nights
Price Range
$$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.Financing Options
Financing options are available for this mattress.
Sleep Number 360 i10 Smart Mattress
Out of all the Sleep Number beds, the 360® i10 is the heftiest if you look at its size, comfort foam layer, and price tag.
Read Sleep Number 360 i10 Smart Mattress Review
Material
Other
Firmness
Multiple firmness options
Trial Period
100 nights
Warranty
15-year limited warranty
Shipping Method
Flat-rate white glove delivery
Price Range
$$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.Financing Options
Financing options are available for this mattress.
How Does The Construction Differ?
Sleep Number 360® i8 vs i10 Per Body Type
Every mattress will feel different to sleepers depending on individual attributes and preferences, such as body weight and sleeping position. Up next, I’ll compare how the 360 i8 and i10 mattresses perform for various sleepers. Overall, I think both beds are great options for all types of sleepers. However, heavier sleepers may prefer the 360 i10 for its extra cushioning.
Sleep Number 360 i8 Smart Bed Body Weight Scale
| Body Weight | Side | Back | Stomach |
|---|---|---|---|
| Light (under 130lbs) |
excellent | excellent | excellent |
| Average (130-250lbs) |
excellent | excellent | excellent |
| Heavy (over 250lbs) |
unpleasant | unpleasant | unpleasant |
| Body Weight: Light (under 130lbs) | |
|---|---|
| Side Sleeper | excellent |
| Back Sleeper | excellent |
| Stomach Sleeper | excellent |
| Body Weight: Average (130-150lbs) | |
| Side Sleeper | excellent |
| Back Sleeper | excellent |
| Stomach Sleeper | excellent |
| Body Weight: Heavy (over 250lbs) | |
| Side Sleeper | unpleasant |
| Back Sleeper | unpleasant |
| Stomach Sleeper | unpleasant |
Sleep Number 360 i10 Smart Bed Body Weight Scale
| Body Weight | Side | Back | Stomach |
|---|---|---|---|
| Light (under 130lbs) |
excellent | excellent | excellent |
| Average (130-250lbs) |
excellent | excellent | excellent |
| Heavy (over 250lbs) |
good | excellent | good |
| Body Weight: Light (under 130lbs) | |
|---|---|
| Side Sleeper | excellent |
| Back Sleeper | excellent |
| Stomach Sleeper | excellent |
| Body Weight: Average (130-150lbs) | |
| Side Sleeper | excellent |
| Back Sleeper | excellent |
| Stomach Sleeper | excellent |
| Body Weight: Heavy (over 250lbs) | |
| Side Sleeper | good |
| Back Sleeper | excellent |
| Stomach Sleeper | good |
Sleep Number 360® i8 vs i10 Comparing Mattress Performance
Temperature
Several factors contribute to a mattress’s cooling ability. First and foremost, I consider its construction. The Sleep Number i8 and i10 have features to help regulate temperature at night. I think sleepers will find that Sleep Number’s smart 3D fabric cover does a good job of actively absorbing and releasing body heat.
The comfort foam layers in both provided cushioning without making me feel too hot, although there was still a slight increase in temperature. The air chambers in the Sleep Number 360 line also help with airflow. While both Sleep Number mattresses provide effective cooling, I would say the i10 performs slightly better.
Motion Isolation
If you have a restless partner, you’ll want something with better motion isolation so you don’t feel their movements on your side of the bed. If that’s not an issue, or you’re a combination sleeper who switches between different positions throughout the night, a more bouncy and responsive mattress is a plus.
Both the Sleep Number 360 Smart Beds mattress performed excellently in our motion isolation tests. However, it’s important to note that some customer reviews of various Sleep Number beds mentioned the “trench effect,” where the middle of the bed can sag if each side has significantly different settings. This may impact support and comfort for some sleepers, so it’s worth considering if you and your partner have different firmness preferences.
Edge Support
I think that the Sleep Number 360 i10 offers better edge support than the i8 mattress. During testing, While I was able to lay on the edge of both of the Sleep Number mattresses without feeling like I was going to fall off, I found the extra height and layers of the i10 to be more supportive. This shouldn’t come as a surprise, as the i10 is the more premium model of the two beds. Both beds provide exceptional stability, meaning that people who tend to gravitate toward the edge at night shouldn’t have to worry about feeling secure.
Pressure Relief
When it comes to pressure relief, the Sleep Number 360 i8 and i10 are great options for most sleepers thanks to their adjustability. Most sleepers should be able to find a setting that offers ample support and pressure relief.
However, I would recommend the i10 over the i8 to heavier sleepers. These sleepers will have more cushioning to work with on the i10, meaning that back sleepers and side sleepers will likely find better relief around their lower backs and joints.
Pain Relief
The pressure map test results can also indicate whether these mattresses aid in reducing pain in specific areas. I think both mattresses are a good option for most average-weight side and back sleepers. However, strict side sleepers with sensitive joints would probably be better off one of our best mattresses for side sleepers.
Durability
Overall, I think that the Sleep Number 360 i10 mattress is the more durable option, thanks in large part to its extra cushioning, superior edge support, and robust air chamber system, which helps maintain its shape and support over time. In general, I believe that both Sleep Number beds have a lower risk of sagging and point to better stability than most traditional hybrid and memory foam models.
Company Policies
Sleep Number Policies
- Trial Period – 100-night trial
- Shipping – Free shipping when you order a mattress and base
- Mattress Warranty – 15-year warranty
Sleep Number Customer Service Rating
- Satisfactory: When I entered the Sleep Number site I found the chat button in the bottom right corner. Then, a box popped up asking for me to insert my name, how they could help, my order number, and my zip code. I was then connected to a virtual assistant bot that further asked about the services I needed. If it wasn’t in the drop-down, I could type in the word “agent” so that’s what I did. At this time, I waited for a few minutes and then was told that the wait time would be higher than normal. It took 5 minutes to connect with someone.
Sleep Number 360® i8 vs i10 Price
When deciding between these two Sleep Number beds, your decision may come down to price. So, let’s take a look at how much these beds cost in the pricing chart below. And don’t forget that you can always visit our coupon page to save big on your next purchase.
Prices listed are before discount or offer on each size.
| Size | Sleep Number 360 i8 | Sleep Number 360 i10 |
| Twin | $3,399 | N/A |
| Twin XL | $3,549 | N/A |
| Full | $3,824 | N/A |
| Queen | $3,999 | $5,499 |
| King | $4,699 | $6,199 |
| California King | $4,699 | $6,199 |
Other Sleep Number Comparisons
Wondering how the Sleep Number beds stack up to some of their competitors from other online mattress companies? Take a look at some of our other comparisons below.
Sleep Number
Sleep Number Frequently Asked Questions
How do the Sleep Number mattresses ship?
Sleep Number only offers free shipping and delivery with the purchase of a mattress and a base.
What are the return policies for the Sleep Number mattresses?
Sleep Number offers a 100-night sleep trial. If you don’t like your mattress within this period, you can return it for a full refund.
Do the Sleep Number mattresses come with a warranty?
Yes, both mattresses come with a warranty. Sleep Number offers a 15-year warranty on all of their models.
How long do the Sleep Number mattresses last?
With thoughtful construction and quality materials, the Sleep Number mattresses should last folks between 7 to 10 years.
As we finish this comparison, I’ll leave you with what I like most about the Sleep Number mattresses and and some of their drawbacks.
Our Review Process
Our Sleepopolis reviewers personally test each mattress. We start by unboxing the mattress to figure out how difficult (or easy) it is to get the mattress from the box to the bed. Then, we spend time laying on the bed in different positions, taking time to assess it on our backs, stomachs, and sides. Next, we perform our Sleepopolis tests, using specialized tools to measure qualities like motion transfer, bounce, and pressure relief. Our last step is to open up the mattress and take a look at each layer. These steps allow us to give our final verdict on the mattress.
