Select a Store
Search Radius
Use Current Location
{ "prodId": "5616428", "siteId": "BedBathUS", "initOrigin": "https://www.bedbathandbeyond.com" }
shop Serta

Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress

Write Review
Earn 9,600 points on this product!
  • Welcome Rewards™ members earn 10 points per $1
  • Welcome Rewards™+ members earn 50 points per $1
  • Welcome Rewards™ Credit Card holders earn an additional 50 points on every purchase
Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress. View a larger version of this product image.
Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress. View a larger version of this product image.
Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress. View a larger version of this product image.
Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress. View a larger version of this product image.
Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress. View a larger version of this product image.
Alternate image 0 for Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress
Alternate image 1 for Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress
Alternate image 2 for Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress
Alternate image 3 for Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress
Alternate image 4 for Serta® Perfect Sleeper Cobalt Coast 12" Firm Twin Mattress
$959.99
Regular Price
Excluded from coupons
Free Truck Delivery - Coupons cannot be applied
Size - Please Select a Size
FREE Store Pickup
Unavailable
Same Day Delivery
Unavailable
Ship to Home
Est Delivery -
Out of stock at Dulles Check Other Stores
Out of stock within 50 miles of 20166
Unavailable for delivery to 20146 Change Delivery Zip Code
Shipping to 20146 Change Zip Code
White Glove Delivery - $99.00 Change Options
Free shipping on order over $39
Qty
1
2
3
4
5
6
7
8
9
10+
Get 20% off every time you shop & earn 10% back in points when you are approved for Welcome Rewards credit card. No annual fee Apply Now

details

highlights

about the product

You can enjoy cooling comfort every night with the Serta Perfect Sleeper Cobalt Coast Mattress. This mattress combines a gel foam fill with a firm innerspring system, allowing it to provide pressure-relieving support throughout the night.
  • Gain a more restful and comfortable sleep by reducing pressure points that cause discomfort, tossing and turning
  • Cool-to-the-touch surface helps to regulate your body temperature so you can rest more comfortably
  • Offers firm support: Ideal for side sleepers
  • Comfort layer includes HexCloud™ Gel Foam
  • 825 coil innerspring with BestEdge™ Foam Encasement
  • Cover fabrication is 100% polyethylene
  • Twin measures 12" H x 40" W x 76" L
  • Twin XL measures 12" H x 40" W x 81" L
  • Full measures 12" H x 55" W x 76" L
  • Queen measures 12" H x 61" W x 81" L
  • King measures 12" H x 78" W x 81" L
  • California King measures 12" H x 85" W x 73" L
  • Spot clean only
  • Meets federal fire retardant safety standards
  • 10-year limited manufacturer's warranty
  • Made in USA of U.S. and imported materials
  • Box spring not included
  • skuId: 69738504

shipping & returns

Please be aware we've temporarily extended our delivery time frames due to Covid 19 precautions at our facilities. The extended time frames will be reflected in the estimated delivery date shown at checkout.

Free Standard Shipping on Orders Over $39

Free Standard Shipping with any online purchase of $39 excluding gift cards and store pick up items (merchandise subtotal is calculated before sales tax, gift wrap charges, and after any discounts or coupons). Truck delivery and shipping surcharges on over-sized or extremely heavy items will still apply (these charges are indicated on the appropriate product information pages and will be displayed in the shipping subtotal of your order). Products qualifying for Free Shipping will be identified with "Standard – free”. If you select a shipping method other than Standard, shipping charges will apply.

See Full Shipping & Returns Policy

Ratings & Reviews

Ratings Snapshot

4.694444444444445
36 reviews ·

Would Recommend

33 recommendations

5
31
4
3
3
0
2
0
1
2

Quality

Value

Write A Review
Most Helpful Positive Review
Amazing product Kee24 ·
Recommended Not Recommended

[This review was collected as part of a promotion.] I am so in love with this mattress it is so comfortable I love how smooth it feels and how it keeps my body cool when I am hot I would most definitely recommend this mattress to anyone looking for a new mattress


5

Quality

Most Helpful Critical Review
Leaves imprints/dents Jack555555z ·
Recommended Not Recommended

I used this mattress for about 60 days, and I have to say the comfort is rather poor. The mattress leaves an imprint/dent of your body after a couple nights of sleep and it does not revert back. The only way to counter that is to move to different parts of the bed but that won't work if there are two people sleeping on it. Eventually your neck and back starts to hurt. Your whole body sinks except your head, so you neck will be in an uncomfortable position and it will hurt severely, pillows will make it worse. On another note, return was rather quick and I got, my money back no problem. I haven't tried the perfect sleeper but I believe you should try that one instead or just go with another brand if the price is too much,

Response
|

Hello Jack! We’re so sorry that your Serta mattress did not work out for you. Thank you for taking the time to provide us with your honest review.

Customer Reviews

Showing 8 out of 36 reviews

Filter

Sort

Great Deal lordbaltimore ·
Recommended Not Recommended

It pays to buy direct via the internet. Get best options and price. Delivery was quick. Wish this product was a bit more firm, but for the price I am satisfied.


5

Quality

5

Value


Not so FIRM PL22 ·
Recommended Not Recommended

We bought this Mattress a month ago, and everything was exceptional regarding all the buying and delivery experience, but unfortunately is not firm at all, it feels more like a plush to us. Also is very light and thin, I was really expecting for something with more structure.


4

Quality

4

Value


budget mattress for a reason SherZ ·
Recommended Not Recommended

I genuinely loved this mattress when I first got it. It was firm yet soft. But less than 3 weeks later, it is sagging in the areas that I sleep already. Mind you, I am a petite woman 5'2 and 110 pounds and it's only me who's been sleeping on this queen size mattress. I suppose it's my fault for buying an affordable mattress in the first place, but it's a life lesson learned at least. Definitely recommend to splurge for a high quality mattress. The little diamond tufts that I assume are part of the "Cool Twist Gel Foam" are deflated in the sagged areas and when I press down on these tufts vs areas that I haven't slept on, the areas I haven't slept on's tufts have noticeably more bounce. So maybe the rest of the mattress is fine and it's just the top layer that is wearing down. Anywho, I don't want to potentially deal with the hassle of an inspection and replacement fee so I'm thinking I'll try to find a mattress topper then rotate the mattress and put it on. That could possibly help slow down the sagging so it doesn't get worse. Then I'll put it in the guest bedroom where it won't get used much and get myself a new mattress from elsewhere.


1

Quality

3

Value


Response
|

Hello Sherry. Thank you for taking the time to leave a review. We would like to apologize for your recent experience. We would like to learn more about your specific situation and make this right. Please contact us at 1-888-557-3782 Mon–Fri 9am–5pm EST. Thank you.

Loving me some Serene Sky Firm! Addieluv1 ·
Recommended Not Recommended

Honestly, I'm a picky girl. Especially about my intimate & personal creature comforts. Nothing much more personal than my mattress. THIS MATTRESS IS MY NEW WOOBIE! I won't even stay over at friends' houses anymore bc I'm SO looking forward to climbing into my wonderful new Serene Sky Firm by Serta. 5 stars. I've been sleeping on mine 6 months & what a wonderful firm mattress! Coming from someone with a crippling bad back. Unbelievable! I sleep great and don't feel like I slept on the hard ground either. Hands down the best mattress I've ever owned. Thank you,Serta!


5

Quality

5

Value


Comfortable blessedus ·
Recommended Not Recommended

[This review was collected as part of a promotion.] After a week of sleeping on it, I have been waking up with no back pain. The mattress really supports my back. I’m sleeping more comfortably and it is great! When I opened the mattress. I recommend this mattress to anyone who needs back support when sleeping!


4

Quality


Reviewer received an incentive in exchange for their honest opinion.

Finally Sleeping Through the Night SarBear ·
Recommended Not Recommended

[This review was collected as part of a promotion.] I've never been able to sleep well, and I usually toss and turn all night. This mattress has made a world of difference! It is so comfortable, and my body doesn't ache in the morning like it used to. It cushions my body to where I don't feel pressure on my back or shoulders, but doesn't feel too firm. I'm usually really hot when I sleep, and I wake up feeling sweaty. This has really changed that, because it's so breathable and keeps me cooler. I love the quality; it's sewn with no loose strings or frayed fabric, and I think it will hold up against wear and tear and last a long time. I think it's a good mix that it has both coils and foam, because it provides great support while still feeling soft and comfy. Serta has always made great products, and this is no exception.


5

Quality


Reviewer received an incentive in exchange for their honest opinion.

Supportive, Comfortable, Cool ckpoppins47 ·
Recommended Not Recommended

[This review was collected as part of a promotion.] I've been sleeping on this mattress for about a month now and absolutely love it. The mattress is on the firmer-side (about a 7 out of 10) which I like a lot. My previous mattress was very soft and I found that I much prefer the support that this mattress provides. Additionally, the build quality of the mattress is exceptional, and I believe this will last quite a while. Overall, very impressed!


5

Quality


Reviewer received an incentive in exchange for their honest opinion.

Leaves imprints/dents Jack555555z ·
Recommended Not Recommended

I used this mattress for about 60 days, and I have to say the comfort is rather poor. The mattress leaves an imprint/dent of your body after a couple nights of sleep and it does not revert back. The only way to counter that is to move to different parts of the bed but that won't work if there are two people sleeping on it. Eventually your neck and back starts to hurt. Your whole body sinks except your head, so you neck will be in an uncomfortable position and it will hurt severely, pillows will make it worse. On another note, return was rather quick and I got, my money back no problem. I haven't tried the perfect sleeper but I believe you should try that one instead or just go with another brand if the price is too much,



Response
|

Hello Jack! We’re so sorry that your Serta mattress did not work out for you. Thank you for taking the time to provide us with your honest review.

related categories

related searches

firm memory foam mattress full size mattress innerspring mattress king gel memory foam mattress serta mattresses serta queen mattress us mattress

We write really great emails.

We'll let you know about the latest deals & newest products. New subscribers get 20% off Entire Purchase.

Please enter a valid email address.
Star Menu Close Down Chevron Search Gift