Newton Mattress & SafeSleep® Comparison

Newton Mattress

We review the Newton mattress and the New SafeSleep® breathe-through crib mattress side-by-side.  Specifically, we peel back the layers and find five big differences among these top two breathable crib mattresses.

You find the ideal crib.  It s now time to find the ideal crib mattress. Eventhough picking a crib mattress may seem like a boring task, it is one that needs careful review.

The American Academy of Pediatrics (AAP) Safe Crib Mattress Guidance is Simple:

  • Firm
  • Tight fit in the crib
  • New and not used
  • The mattress is not taller than 6 inches
  • If it needs a sheet, it should fits tight

Even with all these safety measures, deaths of babies placed on their backs and found face down on firm fiberfill crib mattresses still occur.  Including crib mattresses meeting all the safety features listed above.  Specifically, 3,500 babies in the US die each year from sleep-related deaths.

Here are more interesting crib mattress facts.

The Top Two Breathable Crib Mattresses Are The Newton Mattress and The SafeSleep® Breathe-Through Mattress.  

This article reviews the following:

  • Comparisons shared between the Newton and the SafeSleep® crib mattress
  • Five big differences between these two breathable crib mattresses
  • Why we find the SafeSleep® the best crib mattress choice
Newton Mattress crib

Newton Mattress

5.5″ High

Price:  $299.99 – $349.99


Breathable baby Mattress

SafeSleep® Mattress

5″ High

Price:  $299.00

Newton® believes “What’s inside matters most.” 

SafeSleep® believes, “What’s not inside matters most.”

What’s Inside The Newton® Mattress and What’s Not Inside The SafeSleep® Crib Mattress…

Newton Crib Mattress
Newton baby mattress

The Newton® mattress contains a spongy plastic core made up of food grade polymers which is a plastic (Wovenaire®).  The company claims it is made from the same plastic as yogurt cups. 

The SafeSleep® crib mattress has no fill or core of any kind.  By design, it is filled with constant fee flowing air.  This means your baby is not sleeping on plastic.

I.  Similarities Shared by both the Newton Mattress and SafeSleep® Mattress

Both the Newton mattress and the SafeSleep® mattress address added concerns shared by both parents and medical professionals.  These concerns are the risks associated with foam and innerspring crib mattresses, should an infant end up in a face-down position.

According to scientific testing, both the Newton® mattress and the SafeSleep® crib mattress,


  • Greatly reduce suffocation risks
  • Are 100% washable
  • Hypoallergenic & latex free
  • Use no metal springs, polyurethane foam or, glue
  • Have certifications proving quality and non-toxic materials
  • Are made from eco-friendly materials and are recyclable
  • Offer free shipping
  • Offer a no-risk, in-home trial period
  • Have 5-star ratings
  • Firmness levels for both infants and toddlers
  • Both have certifications for purity and no chemical emissions (Greenguard Gold  certified- Newton and OEKO-TEX certified- SafeSleep)
  • List price is similar

II.   Five Big Differences Between the Newton Mattress and the SafeSleep®

Your baby spends more than 70% of their first year sleeping in their crib. Specifically, babies sleep up to 18 hours a day. Consequently, picking the right crib mattress for your baby is a big decision.  

While reviewing the Newton mattress and the SafeSleep® breathe-through crib mattress, we find five big differences.  We explain these differences to help you choose between these top two breathable crib mattresses,


  1. Difficulty vs ease of washing
  2. Suffocation vs. CO2 rebreathing risk
  3. Inner core vs. no core or fill
  4. Number and type of fabric layers 
  5. Flame retardants vs. no flame retardants


Differences Between The Newton Mattress and SafeSleep® Explained:


1.  Difficulty vs. Ease of Washing  

Washing the Newton Crib Mattress

Removing the outer cover of the Newton mattress is easy.  You simply unzip around the entire perimeter of the Newton  mattress – 360 degrees. 

However, the Newton waterproof mattress has a second waterproof layer.  This layer is removed the same as the outer cover.  As a result, it’s an added step.   

Requires Lifting Mattress Out of Crib To Wash Cover

The full Newton mattress must be lifted out of the crib for washing.  The only way to remove the bottom section of both the top and second-layer, waterproof cover, is lifting the mattress out of the crib. However, the mattress is light.  Both covers are easily cleaned in a washing machine.

Core/Fill of Mattress Requires a Bathtub or Shower for Washing

Unfortunately, washing the plastic core is difficult and messy.  The plastic core of the Newton mattress is stiff and rigid.  Consequently, it is not machine washable.  Instead, Newton Baby® company recommends washing the standard size crib mattress core in a bathtub.  A standard size crib mattress is 52 inches by 28 inches. 

A standard tub size measures 45 inches long by 22 inches wide.  The size gap between the Newton mattress and our standard bathtub makes washing the core difficult, wet, and messy. 

Additionally, while washing the Newton breathable crib mattress, I had to fit the wet core and reposition it several time.  Again, it is a wet and messy process. Not to mention, I find it difficult to tell if the mattress core is completely clean.  

The Newton baby website says their mattress loves taking a bath.  I am sure it does.  However, I don’t believe parents enjoy giving it a bath.

Newton mattress cleaning

How to Wash Newton Mattress

Should a Baby’s Mattress Be in a Bathroom?

I find washing the Newton mattress in a bathroom very concerning.  It’s no mystery, streptococcus, e. coli, and multiple other pathogens lurk in every part of our bathrooms. Washing my baby’s mattress in a bathroom makes me believe I am asking for trouble.  Consequently, the washing process is not only difficult.  It feels unsanitary.

Drying the Newton Mattress ,

Another problem, is the long dry time.  Once you finish washing the plastic core of the Newton mattress, get ready for a long dry time.  The Newton crib mattress  takes 2-6 hours to dry.  I fear my baby just missed a nap

See washing instructions on the Newton Mattress:  Washing the Breathable Newton Mattress

Newton Mattress caution

How to Wash Newton Mattress Cover

Avoiding Mold

The Newton mattress must be completely dry before putting the cover back on.  If the core is damp, you run the risk of mold forming.  Mold grows in cellulosic fibers.  Cellulosic fiber is the core material used by the Newton.  Putting the cover back on damp, can cause mold to start.

Sources of Mold

Additionally, the mattress needs constant washing.  Mold can develop when  vomit, drool, urine, feces, and sweat gets inside the mattress. In other words, if you don’t clean the plastic core often, you’ll soon grow a garden of microbes

Additionally, the Company suggests machine drying the waterproof layer.  They also recommend avoiding dampness.  Dampness creates an odor.     

Washing the SafeSleep® Breathe-Through Baby Mattress

The SafeSleep® mattress cover is suspended over a unique locking bar system.  This system allows the cover to easily to slide on and off. You simply lift the two bars.  Unzip the cover.  Then, pull the cover up and off the bars.   

One-Piece Cover is Easy to Remove Without Removing the Mattress Base from the Crib 

The one-piece cover is easy to clean in a washing machine. The cover dries in five minutes on a medium heat setting.  If you prefer, the cover dries in about 15 minutes by air.  There is no fear of bad odors or missing naptime with the SafeSleep®.

Surface is Easy to Spot Clean

Additionally, spot cleaning the cover is easy while the cover is still on the frame.  A damp cloth does the trick.  Spit up is quick and easy to wipe up.  The quick dry time is amazing.

Not to mention,  there is no fill or core of any kind to house mold or other pathogens.

No Bathtub or Shower Needed

Even better, the base of the SafeSleep® crib mattress is easy to wipe clean.  Simply wipe the base with a clean damp cloth.  I used my favorite cleaner to completely sanitize. Most impressive, the base stays in the crib while cleaning.  No wet mess or germ-filled bathroom needed.

When shopping for a mattress for a crib find out what you should look for.


mattress for crib

How to Wash SafeSleep® Mattress

2.  Suffocation vs. CO2 Rebreathing Risk

Suffocation Risk

Both the Newton mattress and the Safe Sleep® crib mattress reduce suffocation risk.  The truth is, most crib mattresses reduce suffocation risk.  Face compression must  be possible to cause suffocation.  Face compression risk is the reason the American Academy of Pediatrics (AAP) recommends a “firm” crib mattress.  It’s also the reason they warn against soft pillows and blankets in the crib.  

As an example, the Newton breathable mattress is tested against three different inner spring, firm crib mattresses in an independent study.  Even though Newton Baby® paid for the the study, all the mattresses pass the suffocation testing with the exception of one mattress.  The mattress that fails the test is a vinyl covered mattress.  The vinyl cover is loose and causes a pocket around the face of the test mannequin.  

CO2 Rebreathing Risk

When an infant is on a firm mattress, face compression is not an issue.  According to the AAP,  the bigger risk is rebreathing CO2 (carbon dioxide).  CO2 rebreathing is when a baby continues to rebreathe their exhaled air.  Rebreathing can lead to death.   

While there are no scientific studies showing CO2 rebreathing as the direct cause of SIDS.  Rebreathing is the hypothesis the AAP uses when creating safe sleep policies.  The AAP believes rebreathing of carbon dioxide is a likely reason for unexpected infant deaths. 

Baby mattresses with fiberfill and loose cores trap harmful CO2.  Quilted surfaces and even crib sheets are known to trap harmful carbon dioxide.  Consequently, the AAP tells parents to place their infants on their back for every sleep.

Quilting On Cover And No Quilting On Cover

The Newton has quilting on the surface of their mattress.  The Company describes it as adding additional comfort.  On the other hand, the AAP describes quilted surfaces, covers and mattress pads as a rebreathing risk.  Quilted surfaces can trap harmful CO2.


Newton mattress cover

Newton® Breathable Baby Mattress Has Quilting On The Cover

Added Waterproof Cover

Newton Baby®’s waterproof mattress is also questionable when it comes to trapping CO2.  According to Dr. James Kemp, a pediatric pulmonologist at St. Louis Children’s Hospital, crib mattresses with porous interiors may actually trap carbon dioxide.  He points out that a mattress filled with tea tree bark made in Australia in the 1980s and ’90s and marketed as breathable turned out to increase the risk of SIDS.  According to Kemp’s findings, crib mattresses with porous cores, similar to the Newton® breathable mattress, allow more rebreathing of CO2.  

No Quilting, No Waterproof Cover

The SafeSleep® has no quilting.  Additionally, the SafeSleep® breathable  mattress has no waterproofing layer.  Most impressive, the only thing between a baby and fresh oxygen when facedown on a SafeSleep® baby mattress is a 1/8 inch open-celled cover.  Surprisingly, the SafeSleep® is equally as firm as a foam and innerspring mattress. 

Eliminates Risk of Rebreathing CO2

The scientific testing on the SafeSleep® baby mattress is impressive.  The testing shows CO2 is gone from the SafeSleep® mattress before a baby takes in his next breath of air.  This feature eliminates the risk of harmful CO2 rebreathing.  The majority of the AAP’s safe sleep recommendations center around keeping harmful CO2 away from a sleeping baby.  

Infant Breathing

It’s a scientific fact, infants take a breath every 1-2 seconds.  Amazingly, carbon dioxide is gone on the  SafeSleep® mattress in less than ½ a second.  This means CO2 is gone before a baby takes another breath, eliminating the risk of harmful CO2 rebreathing.  For parents who have received the devastating news their baby was a victim of positional asphyxiation, know how important eliminating CO2 rebreathing is.


Safest Baby Mattress

SafeSleep® Breathe-Through Baby Mattress Has No Quilting


3.  Inner Core vs. No Core or Fill

Plastic Core

The Newton mattress interior is a spongy plastic core.  The core is made up of food-grade polymers.  Polymer is a plastic.  The plastic is similar to the plastic used to make yogurt cups.   Yogurt cups seem healthy enough.  I am just not sure I want my baby to sleep on them.

The Company refers to the core as Wovenaire®.  They also claim that the core is made up of 90% air and only 10% plastic.  It seems like a lot more plastic than 10%.

No Core

The SafeSleep® mattress has no fill or core of any kind.  Instead, the design allows for constant free flowing air. The center of the mattress is hollow.  The sides have open vents where passes in and out.  If plastic or yogurt cups aren’t your thing, the SafeSleep® baby mattress is the best choice.


newton mattress plastic core

Newton® Baby Mattress Has A Plastic Core

best breathable baby Mattress

SafeSleep® Baby Mattress Has No Core

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