Mattress Forum

Also is Essentia not a trustworthy company?

thanks!

Dunlop rubber is denser and heavier than Talalay rubber, and therefore materials costs are always higher given that the polymer mixture is the same.  The price of processing Talalay latex is higher and than Dunlop.  Higher price does not always mean a better end product.  The most expensive latex mattresses usually have the most expensive and higher quality coverings and base systems, something that many people will not consider when doing comparison shopping.  For the most part you get what you pay for, but preference is always a big factor.  Natural dunlop rubber is realistically more supportive and longer lasting than less dense natural talalay, natural talalay can be made softer and perhaps (in the case of lower ILD's)  a little better at relieving pressure.  So its not that one is better persay than the other.  At the end of the day, the best and most expensive latex foams are truthfully all natural, there are some synthetic rubbers that exist that can outperform natural rubber in some respects, however styrene butadiene is not really one of them.  The elasticity of natural rubber is essentially what makes latex a desirable product to use in a mattress, natural rubber is significantly more elastic than synthetic latex.  Few other materials compare in this regard other than horsehair (which is even more expensive).

I don't trust Essentias information regarding latex foams as much of it is either biased heavily and or simply incorrect.  For example on their ingredients page they list styrene-butadiene as a component of natural rubber.  Styrene-butadien is quite literally what synthetic latex (in mattresses) is made out of.  They also list polyvinyl acetate as a component of natural rubber, although because this is actually a polymer material it would be tested for by companies like Eco Institut before they certify rubber, there are many latex makers that do not use this chemical in making truly natural rubber.  As a company I don't think Essentia is any more shady (in reality a lot less shady) than most mattress manufacturers.  But they really pick and choose the information they make available about their material and do not have it 3rd party tested (and publicly list the results).  

Savvy Rest, in their blog (by Michael Penny) actually says that you can't make latex 100% natural because there will always be small amounts of processing chemicals like sulfur and some other stuff, which the latex manufacturers say are proprietary information.  He said it's really more like 95% or so, so Savvy Rest will never claim 100% in order to be fully honest.  You can find it somewhere in the blog...I think the title was very roughly along the lines of "chemicals in your mattress" but I can't remember.  I just read it yesterday but I think it was an old entry.  So, possibly that's where Essentia is getting that claim from, though they didn't cite that when I asked.

When a rubber tree is damaged in the wild the milk of the rubber tree (latex) comes out and will actually naturally harden within a relatively short period of time.  Ammonia is typically added in large volumes in the shipping containers so that this does not happen during transport of the material.  Even a small amount is usually added even if it is processed in SE Asia.  

When it comes to sulfur content, zinc oxide, or ammonia...it has nothing to do with the process used...it has to do with vulcanizing natural rubber in general.  If you want to see the purest rubber around you have to get access to Eco Instituts test results for varying manufacturers that submit to testing.  GreenSleep and Cocolatex for example even publish these results so you can know the specific amount of sulfur content and also a super long list of VOC's that they test for.  These are both Dunlop latex foams...there is now some certified Talalay latex but none of these companies have published their results.

Thanks again! Really appreciate you sharing your knowledge with us forumers.

Its not too fair for me to speculate too much.  Most certified dunlop producers do not publish their results either, they usually just list that they have some kind of certification for 3rd party testing.

Budgy thanks for all the helpful posts.

Some questions from me.

1  Which latex lasts longer and which one does not sag?

Synthetic talalay or Natural talalay?

2.  what is the softest dunlop latex? who is making it?

3. For me I am having low back pains.

Should I be choosing synthetic talalay or natural talalay

or dunlop latex?

Thank you budgy

Please do keep in mind that I can only answer these questions based on my own and my customers varied experiences.  

1.  Natural rubber is more elastic than SBR (styrene butadiene rubber).  In theory, natural rubber should last longer, other than perhaps in a land fill where it will biodegrade quickly and SBR will linger on and on.  The only latex mattresses we have ever had excessive sagging issues in were made with blended talalay (30~40% Natural, 60~70% synthetic), and to be fair all of these ones so far also had some polyfoam in the quilting layers as well.  Although there was a customer in recent history that had issues, I went to inspect the mattress.  Even though the blended talalay core was not sagging, it had softened noticeably in one area.  That particular spot the cover on the mattress was discoloured with perspiration stains, if someone is a heavy perspirer, they may want to consider having a thicker wool cover to protect the latex.  Whether the latex is natural or synthetically blended nothing will break down rubber faster than the salts in our perspiration.  

2. I really couldn't say because there are so many dunlop foam producers and I have only examined/worked with a limited # of producers.  I can say in my opinion there are some fairly soft all dunlop latex mattresses available, the 6+4 Natural rubber from Sleeptek is one.  They make the naturally organic line for thecleanbedroom.com, the Suerte organics from the denver organic mattress showroom, and I also have this product in our store in Canada.  GreenSleep Dolcezza Model in the softest configuration is usually soft enough for most people as well. Unless they want marshmallow soft.

3. Lower back pain is usually a sign that your natural posture is simply not being supported.  This can be caused by many things, it could even be the posture you keep when you are laying in bed.  Before you buy a new mattress you should always evaluate some simple things like sleeping position, perhaps your pillow is propping your upperbody up too much and causing your back to be out of alignment.  There are a couple of prevailing myths concerning mattresses.  One is that people should sleep on a firm bed...firm does seem to be good in terms of keep our posture well, although it may be lacking in comfort, it decreases bloodflow and increases sleep fragmentation.  Soft mattresses are no good either because they hammock and do not support the spine properly, in the long term in can directly lead to scoliosis.  A good mattress (regardless of materials used) is supposed to be elastic and flexible.  This way it can support your entire body without being harsh on pressure points.  Soft and firm are subjective terms, a 100 lb person laying on one mattress may find it to be 'firm' another person @ 200 lbs may find the mattress to feel 'soft'.  Elasticity is objective, measurable and scientific, natural rubber is more elastic than synthetic rubber.  So in theory the better performing material then would either be natural talalay or dunlop latex.  Perhaps a combination of the two depending on your comfort preference.  Whether you also find it worth the price premium is debateable I suppose. But in the interest of trying to be as factual as I can be, natural rubber is better performing than synthetic rubber, much in the same way that synthetic rubber will outperform brittle polyurethane foams, flexible boxsprings outperform solid boxsprings (if designed correctly), and individual coils will conform better to body shape than interactive coil types (again if designed correctly).  

I happened to be looking at a Stearns and Foster 97% latex mattress just for fun (I was really there to look at their Intellicoil pocket coils which are made from one wire twisted into a spring within a spring; very ingenious design). Anyway as I was trying out the latex mattress a representative from S&F was there and asked me if I had any questions! Boy, did I! I am sure he did not expect to encounter someone who was well-versed in latex specs and who in all honesty probably knows more about it than he did.

However, he made the claim that natural latex will NOT last as long as synthetic latex (i.e. retain it's positive properties). I said I had heard different and was skeptical. He insisted that S&F's synthetic latex would last longer than natural. I can almost believe this or at least believe it is possible, because I have also heard it said with great conviction that Talatech latex would last longer than natural latex. (Talatech is made by Latex International who also makes the best natural latex, or one of the best.)

I am not saying one way or the other, and I do not mean to pick a fight with my friend Budgy who probably has more knowledge of latex than anyone here. But I do wonder if any really conclusive tests have been done that would prove one way or the other whether synthetic latex will provide support longer than natural latex. I doubt anyone has actually proven it, or vice versa.

One thing I did want to add is that when you go around shopping for latex, you have to be very careful because a lot of salesmen in stores will pretend to know and not really know what they are talking about. And remember always that "Talalay" is a process not a type of rubber. So synthetic latex can also be Talalay or Dunlop processed. "Talalay" does not mean "natural", it can be synthetic or natural. Stearns and Foster and Simmons both claim to use Talalay latex in their mattresses but it is synthetic. Again, whether that is bad or good is debatable.

I will also note that natural latex will turn to dust if left in the sun or extreme heat, as will synthetic. I have latex which is getting very dry. Frankly I don't know if it's Talatech or natural but it is getting very dry and brittle because I have at times left it laying where sunlight reaches it and dry hot air. Budgy, have you noted that natural latex will deteriorate from being in heat and sun? Will it not then also deteriorate (but slower) inside a mattress?