Helix Plus (Nightfall) Mattress Review

Helix nightfall hero image
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Helix Plus (Nightfall) Mattress Review


8.0 / 10 MA Score

4 / 5 Customer Rating

Save up to $200 + 2 free Dream pillows

Check Price


Twin: 39 x 75 Twin XL: 39 x 80 Full: 54 x 75 Queen: 60 x 80 King: 76 x 80 Cal King: 72 x 84


90 - 100 lbs. for queen



Delivery Format

Compressed and rolled up in a box that is roughly 16'' x 16'' x 48''

Delivered In

3-7 business days



Hybrid: foam and coils


Medium firm: 6/10

Trial Period:

100 days


10-year limited warranty


Hybrid mattress built for plus size sleepers

Helix Plus (Nightfall) highlights

  • The Helix Plus is one of nine new mattress models recently launched by Helix.
  • The Plus is a specialty hybrid mattress designed specifically for plus size and big & tall sleepers. This mattress is made with higher density materials and adds an extra support layer of Helix Dynamic Foam that contours to your body.

Mattress Advisor score for the Helix Plus (Nightfall)

See our testing scores below to see how the Helix Plus (Nightfall) performed in our in-house testing process.

Helix Plus (Nightfall) Mattress Review
Shipping 10
Trial Period 9
Return Policy 10
Warranty 10
Set-up Test 8
Motion Transfer Test 7
Edge Support Test 4
Pressure Relief Test 8
Spinal Alignment Test 8.5
Responsiveness Test 5.5
Cooling Evaluation 8
Durability Evaluation 8.5
Customer Service Score 9
Social Impact Score 5
Total Score 8.0

Visit Helix


The best foundations to use with your Helix mattress include a bunkie board with a box spring or any sturdy, flat support system. For slatted foundations, slats should be no wider than 5 inches apart – anything longer may cause sagging and could potentially void your warranty.

Helix also sells its own foundation and an adjustable base which are both well suited to support this mattress.

Solid platform icon
Solid Platform
Solid box spring icon
Solid Box Spring or Foundation
Bunkie board icon
Bunkie Board on a Box Spring
Slatted foundation icon
Slatted Foundation
Floor icon
Adjustable base icon
Adjustable Base

What makes Helix Plus (Nightfall) different from other mattresses?

  • The Plus mattress is known for its maximum support. It provides an extra durability layer to support those with higher BMIs.
  • With the Helix Color-MATCH system, you can find a bed that’s made just for you, literally. By completing the Helix Sleeping Quiz, which factors in biological measurements and comfort preferences, Helix will determine which mattress matches your firmness, support and pressure relief needs.
  • If you’re sharing your bed with a sleeping partner, you have the option to choose a dual comfort mattress (which personalizes each side of the bed based on test results).
  • Are you a hot sleeper? If so, you can upgrade the outer cover of your Helix mattress to the Ultra-Cool knit cover to keep you from waking up in those midnight sweats.

nightfall cover

What to watch out for

  • Note that there may be a slight odor after you unbox your Helix Plus. This should go away within a few hours.

Helix Plus (Nightfall) sizes available

  • Twin: $700
  • Twin XL: $850
  • Full: $995
  • Queen: $1,190
  • King: $1,440
  • Cal King: $1,440

A look inside

  • Helix Two-Layer Cover: The Helix Plus is topped with a dual-layer cover you can unzip. The stretchable top layer is soft to the touch, while the lower layer promotes airflow and breathability.
  • Comfort Layer 1.0The first of the two comfort layers is one inch of Helix Dynamic Foam, a special latex-foam hybrid designed to be denser and contour to your body.
  • Comfort Layer 2.0The second of the two comfort layers is one inch of Ultra-Dense Memory Plus Foam – it’s designed to relieve pressure.
  • 1’’ High-Grade Polyfoam Transition LayerNext you’ll find the transition layer made of high-grade polyfoam with a higher IFD (aka Indention Force Reflexion) designed to support those with higher BMIs. This layer provides ergonomic support.
  • 8’’ XL Pocket-coil UnitThis layer is made of 660* individually wrapped pocket-coils to help cradle your body and limit motion transfer. The outer coils reinforce the perimeter of the mattress to provide support on the edges.
  • 1’’ DuraDense Foam Base Layer: The bottom layer of the Plus mattress is made of dense memory foam that provides overall durability and support.
Inside the Helix Nightfall
Inside the Helix Nightfall

What Helix Plus (Nightfall) customers have to say

Helix couples

  • “I bought a Helix mattress and have been really happy with it! I am pretty demanding with mattresses – I am short, pretty heavy for my size and sleep face down. The initial survey was able to capture all these characteristics and provided my ideal mattress. So far I have slept like a baby every night!” – Phil
  • “I bought this mattress because it was customized to my body. Because of that, I thought it would hold up longer. I am 6’1″ and weigh 260 lbs. My wife at 6’1″ and 160 doesn’t seem to have a problem with any mattress, however, there is a divot where I sleep.” – Caleb
  • “I did not know that my previous bed was so horrible. I now have a Helix and now I cannot wake up. I am sleeping so hard, deep and comfortable that waking up and wanting to get out of bed is difficult because I simply am so comfortable. Also, I did not know that a mattress could help with aches and pains. I had shoulder and lower back pain for years and just assumed that it was a part of my life. Guess what? It is not a part of my life any longer. I am now a believer and am so happy that I decided to buy a Helix bed. One of my best purchases for sure. No regrets!” – John

Read more reviews.

The finer print


The Helix Plus comes with free delivery and should arrive at your doorstep within 3-7 business days.


The Helix Plus mattress comes compressed and rolled up in a box. You will simply open casing, unroll the mattress and watch it spring to life.


Return policy

If you’re not in love with your Helix Plus mattress, you can return it for a full refund within your 100-night trial period. Helix will arrange for a representative to come to your home to pick up your mattress and donate it to a local charity. Helix asks you give the mattress a try for at least 30 nights.


Helix mattresses come with a 10-year limited warranty.


The cover of Helix Plus Mattress is removable and machine washable.

Zip-off Nightfall cover

Bonus points

  • Made in the USA.
  • CertiPUR-US Certified foams.
  • The Helix PLUS is one of the best mattresses for heavy people.
  • After 30 days, Helix will provide a free mattress topper (either soft or firm) if the firmness isn’t working for you during your 100-night trial. This doesn’t void the trial in any way, and you can still process a return/refund if you continue having issues.
  • Helix’s referral program: For every friend you refer who ends up buying the mattress, your friend gets a $50 discount and you get a $50 Amazon gift card. You can learn more about the program here.

Frequently Asked Questions

How does the helix color-match system work?

Helix partnered with leading researchers and experts on sleep ergonomics to design a quiz that can pair you with a mattress that supports your body type and sleeping style.

Helix mattress spectrum

Using their informative Sleep Quiz, Helix combines your biological needs for pressure relief and support with your comfort preferences to recommend the perfect mattress model for you!

How does the 100-night sleep trial work?

Your 100-night trial period begins when you receive your Helix mattress. This gives you about 3 months to decide if you want to keep or return the Helix mattress. If you decide on the latter, you just have to contact Helix’s customer service team to have a representative sent to your home to pick up the mattress and donate it locally.

DO I NEED TO be home to receive my MATTRESS?

All Helix packages are sent via UPS Ground and there is no need for a signature unless they decide that cannot deliver your package safely, in which case they can decide to obtain a signature.


You should not flip your Helix mattress, as your personalized construction is built on top of a supportive base layer. Make sure the blue fabric is at the bottom part of the mattress, with the white on top. The order of the layers in your Helix Mattress is critical to maintaining the integrity of your individual design.

The Helix Nightfall


It does – in fact, all mattresses do! You may need 30 days to fully break in your new mattress. During this time, your body will get used to the new mattress feel and the mattress will have time to fully take shape and provide all the benefits it was designed to offer.


The Helix Plus mattress supports up to 1000 lbs of combined weight and 500 lbs for an individual sleeper.


You can finance your Helix through Klarna. To take advantage of financing options, select “Pay With Klarna” at checkout, follow the prompts, and enter some basic information for an instant loan decision. You can get approved for a rate as low as 0% APR.

Financing your mattress disqualifies you for using other discounts or promotional offers.

*Residents of West Virginia and New Hampshire are not eligible for financing through Klarna


You should make sure that you unbox your Helix within the first two weeks of receiving your package. Spending too much time in the packaging can affect the resilience of the mattress, preventing it from taking its full shape.

Other products sold by Helix

Four Helix mattresses stacked Mattresses
Starting at $995 for a queen.
Helix pillow Pillow
$85 for standard
Helix cooling pillow Ultra-Cool Pillow
$115 for standard
Helix adjustable base Adjustable base
$1,195 for queen
Helix foundation Foundation
$275 for queen
Helix bed frame Bed frame
$175 for queen
Helix mattress protector Mattress protector
$90 for queen
Helix sheets Sheets
$125 for queen

Visit Helix

If you have more questions about the Helix Plus mattress, check out their FAQ page or leave us a comment below.  

Customer Rating derived from Helix.com.

See more Helix mattress reviews.

By clicking on the product links in this article, Mattress Advisor may receive a commission fee at no cost to you, the reader. Read full disclosure statement.