Helix Plus (Nightfall) Mattress Review

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Helix Plus (Nightfall) Mattress Review

✔️Last updated: September 2021

✔️Customer Rating: 4.5/5
✔️Mattress Advisor Score: 8.1/10
✔️Type: Hybrid: Foam and Coils
✔️Firmness: Firm
✔️Free Shipping & Returns
✔️100-Night Sleep Trial
✔️15-Year Warranty

Up to $200 off W/ promo code LDAY200

What we think: The Helix Plus mattress is a great option for heavier people and plus-sized sleepers. The quilty dense materials combined with contouring foam also makes Helix Plus work well for side sleepers. Helix Plus’s durability is ensured with their 15-year warranty, meaning you’ll sleep well for years.

Who Is the Helix Plus Mattress Best for?

Helix Plus is best for: Helix Plus may not be best for:
  • Heavy people
  • People who sleep on their sides
  • Those prone to sweat at night
  • Back sleepers
  • Those who sleep with a partner
  • Combination sleepers
  • Memory foam shoppers

Helix Plus Highlights

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Helix Plus, formerly the Helix Nightfall mattress, is a top hybrid mattress designed specifically for plus size and big & tall sleepers. In fact, Helix Plus is one of the best mattresses for heavy people. In this mattress review, we’ll tell you all about the ins and out of the Helix Plus mattress, including FAQs, pros, and cons, products specs, and how it performed in our mattress lab tests and evaluations.

To find out more about the Helix Plus mattress, read on.

What we love:

  • This mattress is made with higher density foams and coils, and it adds an extra support layer of Helix Dynamic Foam that contours and cushions your body for comfort and support.
  • The Plus mattress is known for its maximum support. It provides an extra layer of durability to support those with higher BMIs.
  • 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, the outer cover of your Helix mattress is the Ultra-Cool knit cover to keep you from waking up in those midnight sweats.

Testing Scores

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

Mattress Advisor Test Score (Out of 10)
Shipping 10
Trial Period 9
Return Policy 10
Warranty 10
Set-Up 8
Motion Transfer 7
Edge Support 6
Pressure Relief 8
Spine Alignment 8.5
Responsiveness 6
Cooling 8
Durability 8.5
Customer Service 9
Social Impact 5
⭐Total Score for the Helix Plus Mattress: 8.0/10⭐


Pros and Cons


  • Pressure Relief: Heavier sleepers tend to have more pressure on those sensitive areas like the hips and shoulder, so they need a mattress that can ease these pressure points. The Helix Plus showed minimal stress on these pressure points during our lab test.
  • Spine Alignment: Side sleepers especially should look for a mattress that can offer an aligned spine. This keeps you from waking up with lower back pain. The Helix Plus mattress offered a near perfectly straight spine to our side sleeper.
  • Cooling: No matter your size, sleeping hot and waking up sweating sucks. The Helix Plus is made with breathable layers that keep you cool all night.
  • Durability: Plus-sized sleepers can struggle with keeping a mattress for its entire lifespan without premature sagging. That’s why the Helix Plus is made from premium materials and comes with a 15-year warranty.
  • The Helix Plus mattress is made right here in the USA.


  • Note that there may be a slight odor after you unbox your Helix Plus. This should go away within a few hours.
  • While the Helix Plus is durable, the edge support wasn’t great.
  • Combination sleepers should look for a mattress that responds to their tossing and turning, but the Helix Plus did not perform best in responsiveness.

Edge Support

If there was one factor the Helix Plus does not shine in, it’s edge support. We tested this by perching ourselves on the edge to put on a pair or shoes as well as by lying there in all three sleeping positions. And let me tell you, we seriously felt as if we’re falling off. Not great.

This is only a big deal if you enjoy sleeping near the edge of the bed or always seem to find yourself sitting there to get ready or un-ready.

Spinal Alignment

Though edge support was a little disappointing, we were impressed with Helix Plus’s spine alignment score. When our testers lay on their sides, there was only a slight dip in the middle, meaning you’ll wake up with little to no back pain. (Side sleepers, I’m looking at you.)

Pressure Relief

Another test that went pretty well was the pressure relief test. This is especially important for heavier sleepers because they tend to not receive great pressure relief from your average mattress. But luckily for us, when we used our pressure heat map, we saw minimal pressure in both hips and shoulders.

Product Details


The Helix Plus is a 7-8/10 on the firmness scale, classifying it as a firm mattress. This is the optimal firmness level for back and stomach sleepers.

Does It Support Your Sleep Position?

Side sleepers will have a straight spine and pressure relief off of their hips and shoulders. Stomach sleepers and back sleepers will also stay in alignment thanks to Helix Plus being a firm mattress. However, the Helix Plus does not have the best responsiveness, so it is not the best choice for combination sleepers.

For more recommendations by sleeping position, head over to the guides below.

Will You Sweat on Helix Plus?

Cooling is one of the main factors we look for in a mattress for plus-sized sleepers, and the Helix Plus doesn’t disappoint. Made with a layer of innerspring coils, naturally cooling latex foam, and a breathable cover, the Helix Plus allows for ample airflow, allowing built up heat to escape, keeping you cool. It is one of the best cooling mattresses for heavy sleepers.

Does Helix Plus Have a Weight Limit?

The golden question for a mattress made for heavy people. The Helix Plus mattress supports up to 1000 lbs of combined weight and 500 lbs for an individual sleeper; that’s plenty of support for people of any size.

Foundation and Bed Frame Compatibility

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.

The Inside Layers

Helix Plus is a hybrid mattress made with memory foam layers and a pocketed coil system. All foam used in this Helix mattress are CertiPUR-US Certified.

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  1. Helix Two-Layer Cover: The Helix Plus has a zippable cover. The stretchy top layer is ultra-soft, while promoting breathability and airflow.
  2. Comfort Layer 1.0: One of two comfort layers, Helix Dynamic Foam is a dense latex-foam made to contour your body.
  3. Comfort Layer 2.0: 1 inch of super-dense Memory Plus Foam that relieves pressure.
  4. High-Grade Polyfoam Transition Layer: Made of high-grade polyfoam this layer has a higher IFD (aka Indention Force Reflexion) for ergonomic support for people with higher BMIs.
  5. XL Pocket-coil Unit: 660 pocket-coils help cradle your body add motion isolation. Outer coils add edge support around the perimeter of the mattress.
  6. DuraDense Foam Base Layer: More high-density memory foam provides extra durability and support.

Helix Plus Mattress Sizes, Dimensions, and Pricing

Size Dimensions Weight Price*
Twin 39” x 75” x 12” 70 lbs. $849
Twin XL 39” x 80” x 12” 73 lbs. $949
Full 54” x 75” x 12” 90 lbs. $1,149
Queen 60” x 80” x 12” 106 lbs. $1,649
King 76” x 80” x 12” 129 lbs. $2,049
Cal King 72” x 84” x 12” 129 lbs. $2,049

*Prices do not reflect exclusive offers or discounts. Click below to see the best price for the Helix Plus mattress.

What’s Unboxing Like?

Helix Plus arrives at your doorstep compressed and rolled up in a box that is roughly 16” x 16” x 48”. Bring Helix to your room, unroll it on your foundation, and allow it to rise and expand. 

When we unboxed Helix Plus, we noticed how heavy it was from all of the premium layers, so we recommend partner work. There is a slight off-gassing smell when you open the mattress which is normal and should disappear within a few hours.

Helix does not offer white glove delivery and setup.

Purchase Details

Policy Details
Delivery Free shipping; arrive to your door in 3-7 business days
Trial Period 100 nights
Warranty 15-year warranty
Return Policy Free returns
Financing Available through Klarna

Helix Shipping and Delivery

The Helix Plus comes with free delivery and should arrive within 3-7 business days. All Helix packages are sent via UPS Ground ,and there is no need for a signature unless they decide that they cannot deliver your package safely, in which case they can decide to obtain a signature.

Your Sleep Trial

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. 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.

If you decide to return 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.

How Long is Helix’s Warranty?

The Helix Plus mattress comes with a 15-year warranty that covers any workmanship defects from normal use. To file a claim email help@helixsleep.com.

Talk to Customer Service

Getting in touch with Helix’s customer service is as easy as live chatting with a rep on their website, emailing help@helixsleep.com, or booking an appointment for a call.

What’s the Return Policy?

If you don’t love your Helix Plus mattress, you can return contact customer service for a full refund within your trial period. Helix will have a representative to come pick up your Helix mattress and recycle it or have it donated to a local charity. Helix asks you to break in your mattress for at least 30 nights.


Should You Get the Helix Plus?

Now you’re probably thinking, “is Helix Plus the mattress for me?” The answer is yes if you check any of the following boxes:

  • You consider yourself a heavy sleeper.
  • You tend to sweat at night and kick off the covers.
  • You suffer from back, hip, or shoulder pain.
  • You sleep strictly on your side, back, or stomach.

Helix Plus is not for you if you identify as a combination sleeper who tosses and turns or you find that you enjoy sleeping on the edge of the bed. If you fall into either of those categories, allow me to point you in the direction of the Big Fig mattress, a bed for plus-sized sleepers with great edge support and responsiveness.

Compare the Helix Mattress to Other Options

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Compare the Helix Plus to Other Mattresses

Shopping around? You can see how the Helix Plus mattress stacks up to your other options with our comparison tool.

Other Products Sold by Helix

Helix Midnight Luxe

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Adjustable Pillow

helix pillow 1

Ultra-cool pillow

ultra cool pillow helix

Adjustable Base

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helix foundation

Mattress Protector

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Does Helix have a 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.


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.

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!


Do I need to flip the Helix mattress?


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.


Does the Helix Plus have a break-in period?


You need up to 30 days to break in your new Helix mattress. During the break-in period, both your body and your new mattress will get used to one another.


Can I finance my Helix Plus?


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.


How long can I leave my Helix Plus in the box?


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.

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