Saatva HD Vs. Helix Nightfall – Which Is Best For You?

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Are you a larger person? If so, you’ve probably had trouble finding a mattress to meet your needs. Heavier people require more support and need a mattress that won’t sag too quickly.

Luckily, there are mattresses made just for bigger people. The Saatva HD and Helix Nightfall are two such mattresses, and they are both very high-quality.

So, which one will you choose?

To make your buying process an easy one, I have all the information you need. Will it be the Saatva HD or the WinkBeds Plus? Read on for my full comparison.

Saatva HD
  • Click the button to get the best deal on the Saatva HD
  • A hotel-style mattress with a plush pillow top. 
  • A great long-term investment. 

Doesn't expire

Save $125
Helix Nightfall
  • Click the button to save $125 on the Helix Nightfall
  • A bouncy, responsive foam hybrid mattress. 
  • A value mattress for larger people. 

Doesn't expire


Key Similarities

  • Both mattresses are made specifically for larger people.
  • They are both hybrid mattresses.
  • Both mattresses should be breathable.
  • They are both durable mattresses.

Key Differences

  • The Saatva HD is taller than the Helix Nightfall.
  • The Helix Nightfall is softer than the Saatva HD.
  • The feel is a bit different. The Saatva HD features a pillow-top, while the Helix Nightfall does not.
  • The Saatva HD has more of a luxury design.
  • The Helix Nightfall is more affordable than the Saatva HD.

Saatva HD

Saatva HD Construction

  • The Saatva HD is 15.5″ tall.
  • The cover is made of organic cotton, tufted and quilted with comfort foam.
  • The top also contains Guardin, a treatment that is antimicrobial.
  • Then you have a layer of ventilated, zoned Talalay latex foam.
  • Below this is a layer of memory foam.
  • Next, there is a layer of support foam.
  • In the support layer, you have 12.5 gauge tempered steel coils.

Read the full Saatva HD review.

A mattress is opened to show the construction.

Helix Nightfall Construction

  • The Helix Nightfall is 12” tall.
  • The cover has two layers. The top layer can be zipped off and replaced with an Ultra Cool Cover.
  • First, there is 1” of Helix Dynamic Foam. It is a latex-foam hybrid.
  • Then, there is a 1” layer of Ultra-Dense Memory Foam.
  • This is followed by a 1” High-Grade polyfoam transition layer.
  • Next, there are 8” of individually wrapped coils.
  • Finally, there is 1” of a Dura Dense foam.

Read the full Helix Nightfall review.

Construction Differences/Notes

  • Both the Saatva HD and Helix Nightfall are made to support heavier people. The Saatva HD contains zoned latex, high-density foams, and supportive, zoned coils. The Helix Nightfall also contains high-density foams and supportive coils.
  • The Saatva HD contains zoning in its latex layer and coil layer. This means the mattress is actually firmer in certain areas and softer in others. This should give heavier people the extra support they need for those areas.
  • While they are both hybrid mattresses, their specific constructions will give these mattresses a different feel. The Saatva HD has more of a hotel mattress feel with a pillow-top.
  • Both mattresses should be very breathable. The coils on both mattresses should promote airflow. In addition, they both feature breathable comfort layers. Neither should be trapping too much heat.
  • Both mattresses should be quite durable. That being said, the Saatva HD should be the more durable mattress. It contains more premium materials and simply features a higher end construction. It should be the longer-lasting mattress.

Firmness/Feel Differences

In terms of firmness, I thought the Saatva HD was an 8/10 and the Helix Nightfall was a 7/10. I will note that I am 230 lb, and these mattresses are rated for much heavier weights. If you are larger than me, you could press further into the mattresses and have a different experience.

Here is how I felt while sleeping on the Saatva HD:

  • While lying on my back, I feel very well supported on the Saatva HD. My hips sink into the pillow-top, and I also feel the zoning in the latex and coils layers providing extra support.
  • Moving to my side, I am feeling a bit of pressure on my shoulders and hips. However, it is still a decent match for side sleeping.
  • When I lie on my stomach, the mattress is firm enough for me. My hips don’t bow in, and I feel like I am in proper, neutral alignment.

Here is how I felt sleeping on the Helix Nightfall:

  • Starting on my back, I am getting some nice support. The top foam conforms to the curves of my body and presses up into my lumbar area.
  • While side sleeping, I feel some serious firmness on my shoulders and hips. I am pressing through the comfort layer and hitting the support layers beneath.
  • When I am on my stomach, I feel well supported. My hips don’t bow in at all, and I also feel in good alignment on the Helix Nightfall.

The Saatva HD has a hotel mattress feel with a pillow-top. You get some plushness on top, and then you get down to the bouncy latex layer.

The Helix Nightfall has no pillow-top and has more of a balanced foam feel on top, and then you hit the coils beneath that.

Both mattresses are quite responsive, so you shouldn’t feel stuck.

See more of what I thought of the Saatva HD’s firmness and feel in the video below.


Now, see what I thought of the Helix Nightfall.


Motion Transfer

If you sleep with a partner, it’s worth thinking about how well your mattress will handle motion transfer. If you lie down and your partner moves around on the other side, will you feel that motion transfer to your side of the bed?

To test out the motion transfer of these mattresses, I placed a glass of water on top and then pressed into the other areas of the mattress. I saw less disturbance on the Saatva HD. It is not quite as bouncy as the Helix Nightfall and isolates motion better than the Helix Nightfall.

This makes me think it should be the better option for couples.

See how well the Saatva HD handles motion transfer in the video below.


Now, compare this to the Helix Nightfall.


Edge Support

Those who sleep with a partner or just want to utilize the full surface area of their mattress should consider edge support. When you sit or lie down near the edge of your mattress, will you feel secure or more like you are going to roll or fall off?

Between these two mattresses, the Saatva HD features better edge support. It does not collapse when I sit near the edge, and I feel very secure while lying near the edge.

You can see the edge support differences in the photos below.

A man sits on the edge of a mattress.

A man sits on the edge of his bed.

Pick Saatva HD If …

  • You are a much heavier person. While both these mattresses are made with larger people in mind, the Saatva HD should be able to handle even heavier weights. It is rated to support people between 300 and 500 lb. Having tried out both mattresses, I can say this is definitely the more supportive mattress.
  • You are looking for a durable, luxury mattress. The Saatva HD features some very durable materials such as Talalay latex and tempered steel coils. Because of this, the Saatva HD is a luxury mattress that should be a very good long-term investment.
  • You like a pillow-top mattress. If you like the soft plushness of a pillow-top, the Saatva HD should be the right choice for you. The top cover is tufted and quilted with a comfort foam, so you get a cloud-like experience on top of the mattress.
  • You prefer a firmer mattress. Between these two mattresses, the Saatva HD is definitely the firmer option. If you want a mattress that offers more support and is firmer overall, the Saatva HD should be the way to go.

Pick Helix Nightfall If …

  • You are a larger person but weigh under 300 lb. If you are large, but not in the 300- to 500-pound weight range, the Helix Nightfall should work for you. It can handle that amount of weight and will save you some money as well.
  • You are looking for a more affordable mattress. The Helix Nightfall costs much less than the Saatva HD. If you think both mattresses could work for you, choosing the Helix Nightfall could save you some money up front.
  • You prefer a mattress with a balanced hybrid feel. While both of these mattresses are hybrids, the Saatva HD features a pillow-top, and the Helix Nightfall does not. The Nightfall is a better match for those who want a bouncier foam hybrid experience.
  • You want a softer mattress. While it is very supportive, the Helix Nightfall is the softer of these two mattresses. You definitely get to sink further into the mattress, so if you want a little more give and softness, go with the Helix Nightfall.


All in all, it shouldn’t be too difficult to choose between the Saatva HD and Helix Nightfall.

The Saatva HD is a better option for those who want a luxury, durable mattress.

The Helix Nightfall is a better choice for those who like a balanced foam feel and want to save some money up front.

Please leave any questions about the Saatva HD or Helix Nightfall in the comments below.

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Marten Carlson

Marten is a staff writer for Mattress Clarity News. He covers the mattress industry as well as sleep science news. He is specifically interested in the connection between sleep and overall health.Marten has written for media publications like Consequence of Sound and received a master’s degree in Film Studies from Emory University.He comes from Franklin, Indiana, and spends all the time he can writing, directing, and acting in films. He has directed genre short films and features. His newest film, Starlets, recently premiered at the River Town Film Festival in Clinton, NJ. He also stars in the upcoming thriller, Sour Bear. His next film, At The Hop, is a hot rod actioner with a horror twist.

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