Sweetnight King Mattress in a Box – 12 Inch Pillow Top King Size Mattress, Gel Memory Foam Hybrid Mattress with Individually Pocketed Springs for Support & Comfort Sleep, Siesta Black
$429.99
Price: $429.99
(as of Sep 19, 2025 13:33:45 UTC – Details)
Sweetnight is a mattress and sleep solutions company that provides premium products to ensure a great night’s sleep. We are committed to maximizing sleep comfort so you can relax and feel rejuvenated the next day.
The Siesta hybrid mattress features individually pocketed coils combined with gel infused foam, which offers plush comfort and ample support in one mattress.Why Should You Choose Sweetnight Siesta Hybrid Mattress?
– Hybrid design, with a combination of high density memory foam and pocketed coil support
Temperature Adjustment for Cooling Sleep
-Gel-infused foam helps to dissipate body heat to keep you cool all night long.
Buy with Confidence
Our mattresses come with a 10-Year Warranty. If you feel the mattress isn’t the ideal fit for your needs or you have any questions about the product, just let us know and we’ll help you out.
What is in the box?
1x Sweetnight Siesta Hybrid Mattress
1x Sweetnight Opener
1x Manual & Warranty Card
Note:
– Please allow 48-72 hours for your mattress to regain its full shape. The rate of expansion is related to the temperature of the room. Most memory foam mattresses will expand faster in a warm room and will take longer in colder temperatures.
– It’s normal that there is an odor after unpacking the mattress. Place the mattress in a ventilated space for a few days and the smell will gradually disappear.
PILLOW TOP DESIGN FOR COMFORT – Sweetnight Siesta hybrid Mattress combines individually pocketed coils with multiple layers of quality memory foam to provide support and cushioned comfort. Thanks to the individually pocketed coil system, this mattress provides ample body support. The extra pillow top layer helps to create a luxuriously plush feel that relaxes the body for a comfortable sleep.
MOTION ISOLATION & NO DISTURBANCE – The Individually pocketed coils of this king mattress work independently to isolate movement, plus the transition layers further mitigate motion transfer, so you are less likely to be disturbed by your partner’s movement during sleep.
COOLING & HEALTHY SLEEP – Sweetnight king size mattress feature gel memory foam, working together with pocketed coil support core, the layers maximize the air circulation and release trapped body heat ensuring you have a cooler sleep. With CertiPUS-US Certified foam, Sweetnight king mattresses deliver a safe and healthy sleep experience.
FIT FOR MOST FRAMES- Sweetnight king hybrid mattress fit all king size frames, such as box spring, floor, slatted base, flat platform. Please allow 48-72 hours for your new mattress to fully expand.
Customers say
Customers find the mattress incredibly comfortable, with good support that helps with back pain, and they sleep better on it, waking up without soreness. Moreover, the mattress receives positive feedback for its quality, ease of setup, and minimal smell, and customers consider it good value for money. However, customers disagree on the softness level, with some finding it too firm.
8 reviews for Sweetnight King Mattress in a Box – 12 Inch Pillow Top King Size Mattress, Gel Memory Foam Hybrid Mattress with Individually Pocketed Springs for Support & Comfort Sleep, Siesta Black
Add a review
Related Products
$429.99
JustinCase –
So comfortable at a great price.
This is the one! We have had it for 2 years now and we love it. When we are away on vacation we compare other mattresses to ours and we can’t wait to get back to our bed. At that price I will just replace it every 4-5 years if need be. I hope this one is still available when I need it again. Just a great mattress that’s comparable to mattresses 10x the cost.
Syres20 –
King 10incher Review
Two (2) weeks of usage and mostly positive views of this king sized mattress. It absorbs most movements, not like those exaggerated commercials but definitely easy to not notice your partner moving.It said it’s great for side sleepers, I’m a back sleeper and feel supported. Mrs is a side sleeper and doesn’t have any complaints though she doesn’t feel how it’s best for side sleepers either. Overall, it is well liked and could do without the marketing hype.Be cautious if you enjoy sitting in bed to watch TV or work on laptop or really anything that requires sitting with the headboard behind you. This mattress won’t hold you up like a regular spring mattress. You’ll sink a little and be in an awkward position. We’re both in the 225lbs+ weight range and this mattress holds up well, though we think 12inch might do even better.The instructions didn’t say to do it but we waited 48hrs anyway to replace the old mattress after letting this new one “breathe” a little.Again, marketing hype, it doesn’t FEEL any cooler than our last mattress. We got ours on clearance for $115 before it went back to normal price of $320, so our bank account, backs, sides, all like this mattress.
Rabid Reader –
Nice Mattress
This is a nice mattress for the price. It is vacuum sealed in a box which makes it easy to move into your home. It inflated quickly and appears to have achieved the stated depth of 12 inches. It is a little less plush than I thought it would be, but it’s still very comfortable. I may add a memory foam pad to the top for a little extra cushioning, but overall, I am very pleased with this purchase.
Faith black –
Quality
I was surprised to see the support and quality and thickness of this mattress. Functionally it has been great, very comfortable and the price was great. I expected a cheap mattress but I would absolutely buy this againIt unfolded quickly and inflated in a couple of hours, great fit.
Mwan –
Love this mattress
My son loves this mattress. Since I replace this mattress in my guest room, my son doesn’t sleep in his room any more. My friend recommend this mattress to me. The mattress arrived quickly, ease of setup, and no weird smell. It is moderately soft and really comfortable. I am happy with the quality, sleep quality, and performanice.To compare with local mattress store, it is good for the price. I was not expecting much but it makes surprise to me. I think it is worth the money. High recommended.
Leslie A. –
Amazing Bed in A Box!
I was hesitant to buy a bed in a box but so happy with this! I was hurting all over from our last mattress. It was 10 yrs old and it was time for something new! I read the reviews on tons of these different beds in a box and I decided on this one! I absolutely love it! It’s like sleeping in a cloud. Best I’ve slept in years! It’s the perfect firmness for us. Not too firm and not too soft. It’s just amazing and the price is amazing. You can’t get better than this for $350! I purchased the 14” queen size. It was 92 pounds in the box. Extremely heavy but worth the struggle to get it up the stairs. So be prepared on how heavy it is. It’s pretty much half the price than the ones they are selling at Costco and also those didn’t have great reviews. I did my homework! Hands down Awesome Bed! Get it! You won’t be sorry-11/24/23 Seattle Wa
R J Crane –
Highly recommended purchase
This is my first purchase of a foam mattress in a box and I couldn’t be more pleased. It inflated quickly and without any odor. It’s extremely comfortable and like advertised as medium firm. I’ve only been sleeping on it for about a month so I can’t speak to long term durability. I haven’t slept on it on warm weather so I can’t speak about how well the gel foam layer works to prevent overheating. So far that hasn’t been an issue. What I can say is that I’ve gotten really good sleep and wake up without feeling any soreness, aches, or muscle tightness. Also my arms don’t fall asleep either anymore. This mattress is a very good deal for the quality.
Adam and Sandra –
Great Value Medium Firm
It was quick to fill up with air and get thick. It’s truly shocking this comes out of looking like a fruit roll up in a box and then looks like a normal mattress.It’s not super firm and it’s really that soft at all.It’s more like a mid or medium firmness. It has a quilted top but to be honest it doesn’t make it feel any softer. I think the quilted top is more decorative than it is about adding softness.I have fibromyalgia and I think I needed something that was softer against my body then this mattress but trying to return a mattress is more work than what it would be worth it for me.My husband says he LOVES this mattress. He says his morning back pain is gone since we got the mattress.It’s nice and thick. It doesn’t have any smell that I have noticed. It was a good value. The size of the bed was right and it fit on my bed frame the way it was expected to.If you like a medium or medium to firm mattress this one is for you.If you need more cushion and softness against your body, than maybe keep looking.