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Memory Foam Mattress Weight 24 Sep 2013 15:15 #1

  • jj91
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First off, I would like to say great site. I spend many hours reviewing the forum to identify our next mattress purchase. My wife would describe my mattress hunt as analysis paralysis. We are both side sleepers and really liked the initial feel of TP's Cloud Supreme but I had reserves about price and the 4 lb. memory foam top layer. My wife is small, but I am 6’4 285 lbs. therefore from everything I’ve read I was set on a mattress with more than 5 lb. memory foam and ultimately wanted something with 7 or 8 lb. memory foam. TP’s 7 lb. memory foam versions seemed excessively priced; therefore my goal was to find a high quality mattress that could match the comfort, quality, durability, longevity, etc. of TP but for a much lower price. In the end, I we decided on a Christeli mattress. I was upsold from the Charleston to the Lux Estate (www.christeli.com/mattresses/lux-estate) because the salesman said given my size the natural latex base would have more longevity and provide better pain relief than their 2 lb. foam core. Would you agree with that?

We received our mattress a couple weeks ago. So far, my wife really likes the mattress. Her only complaint would be that she wishes it was a little softer (like the TP Cloud Supreme). For me, I'm still undecided. It’s signficantly better than our old mattress. I still toss and turn a little during the night but it has seemed to reduce my back and hip pain. My biggest concern is weight of the mattress. The specs for this mattress state 2 inches 8 lb. memory foam over 4 inches 5.3 lb. memory foam. I'm naturally a skeptical person; therefore I put it on the scale before unrolling it. Ignoring the cashmere cover and plastic and paper it was wrapped in I was expecting it to weigh about 130 lbs. (California King), but it only weighed about 90 lbs. Did I miscalculate the weight? Or is there something else that would explain this difference?

Christeli has a very good return/refund policy, which was a key factor in choosing this mattress. Although I had to pay an extra $30 at time of sale it allows me to send the mattress back free of charge (no additional shipping charges like most online retailers) within 30 days of mattress receipt. Decision time is nearing; therefore I would appreciation your thoughts.

Thanks,
JJ

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Memory Foam Mattress Weight 24 Sep 2013 16:19 #2

Fwiw, I equally get about 130 lbs expected weight too:

2" of 8 lb (per cubic foot) = 1.333 lbs per sq foot surface area
4" of 5.3 lb (per cubic foot) = 1.766 lbs per sq foot surface area
Total of above: 3.1 lbs per sq foot

Cali king = 72"x84" = 6'x7' = 42 sq ft

3.1 x 42 = 130.2 lbs

Note: I'm totally just guessing that the 8 lb and 5.3 lb are measured as pounds per cubic foot.

Update: according to the link, in the section 'Our Memory Foam Compared to Tempur-Pedic', it should be 5.3 lbs / 8 lbs per cubic foot:
www.christeli.com/cool-breeze-memory-foam

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Last edit: by dn.

Memory Foam Mattress Weight 24 Sep 2013 16:53 #3

What's interesting is if you play the 'what if' game, and see which of their mattresses would give you 90 lbs. It's fairly easy since there are only a few combinations of 5.3 lbs and 8 lbs mattresses they make, and only a couple viable if you measured 90 lbs.

Selecting one possibility:

5 inches of 5.3 lbs (per cubic foot) = 2.21 lbs per sq foot surface area.

2.21 * 42 = 92.82 lbs. This is very close to your measured weight of 'about 90 lbs'.

Their Tiffany 13.5", their most popular model says their website, has 5" of 5.3 lb. Maybe you accidentally got the memory foam component of their most popular model?

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Last edit: by dn.

Memory Foam Mattress Weight 24 Sep 2013 17:01 #4

  • phoenix
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Hi jj91 and dn,

the salesman said given my size the natural latex base would have more longevity and provide better pain relief than their 2 lb. foam core. Would you agree with that?


I would agree with the durability yes. In terms of pain relief this would have nothing to do with the material itself but with how well the design of your mattress keeps your spine in neutral alignment in all your sleeping positions. Having said that, latex is much more elastic and resilient than polyfoam so it can contour better to your body profile and it also has a higher compression modulus (gets firmer faster with deeper compression than most polyfoam) so it would not allow the heavier parts of your body to sink down as far when you compress the layer more and both of these can contribute to good alignment in a suitable design. In other words ... "any latex" won't make the difference but latex in the most suitable design and firmness level certainly has advantages compared to polyfoam in a support layer. Neutral alignment is important for all people ... not just those with back issues ... but with back issues the symptoms of sleeping out of alignment would normally be more pronounced.


In terms of the weight of your mattress both of your calculations are accurate. Foam density is measured in lbs / cubic ft (or in other areas of the world in kg / cubic meter).

I usually use the thickness of each each layer in inches multiplied by the width and length of the layer (normally 72x 84 for cal king) and divided by 1728 (the number of cubic inches in a cubic foot) and then multiply the total by the density to get the total weight of the layer (or at least what it should be).

The 130 lbs that both of you calculated would only cover the weight of the memory foam and the mattress also has an additional 6" of latex.

The weight of the latex would depend on the type of latex it was and its firmness (Dunlop is heavier than Talalay and firmer latex is more dense than softer latex) but if it's Dunlop it would be somewhere in the range of 5 lbs / cu ft or so (depending on the firmness level) and at 6" thick it would weigh over 100 lbs.

This means that the total weight of your mattress and topper would be over 230 lbs so if it only weighs 90 lbs and you weighed it accurately then your mattress is way out of range it should be and I would ask them about this. Smaller variances would be a normal result of the differences in foam density in different parts of the bun or a normal range of density but this is significantly different from what it should be if you have weighed it accurately.

Phoenix
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Last edit: by phoenix.

Memory Foam Mattress Weight 24 Sep 2013 17:04 #5

Hi jj91 and dn,

The 130 lbs that both of you calculated would only cover the weight of the memory foam and the mattress also has an additional 6" of latex.

The weight of the latex would depend on the type of latex it was and its firmness (Dunlop is heavier than Talalay and firmer latex is more dense than softer latex) but if it's Dunlop it would be somewhere in the range of 5 lbs / cu ft or so (depending on the firmness level) and at 6" thick it would weigh over 100 lbs.

This means that the total weight of your mattress and topper would be over 230 lbs so if it only weighs 90 lbs and you weighed it accurately then your mattress is way out of range it should be and I would ask them about this. Smaller variances would be a normal result of the differences in foam density in different parts of the bun or a normal range of density but this is significantly different from what it should be if you have weighed it accurately.

Phoenix


Hi Phoenix,

I'm assuming jj91 was able to weigh the top part / memory foam component separately from the latex piece.

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Memory Foam Mattress Weight 24 Sep 2013 17:25 #6

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Hi dn,

I'm assuming jj91 was able to weigh the top part / memory foam component separately from the latex piece.


I sure hope so and it doesn't seem likely that it was the weight of the whole mattress (the latex core alone would be more than 90 lbs) ... but even based on only the memory foam it is significantly out of the range it should be and if the weight is accurate I would question it.

Even if the top 2" was 4 lb memory foam and the next 4" of memory foam was 5 lbs the weight of just these two layers would come to just under 100 lbs.

Phoenix
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Memory Foam Mattress Weight 24 Sep 2013 17:34 #7

Hi dn,

Even if the top 2" was 4 lb memory foam and the next 4" of memory foam was 5 lbs the weight of just these two layers would come to just under 100 lbs.

Phoenix


Scroll up in the thread... I made a new post while you were replying to my first, so might have missed it. 5" of 5.3 lbs memory foam is approx 90 lbs, and is the memory foam component of their most popular mattress model. Could be a mixup?

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Memory Foam Mattress Weight 24 Sep 2013 18:35 #8

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Hi dn,

You're right I did miss it (and only looked at the post just before mine).

That's good thinking and could well explain the mystery. A quick thickness measurement could probably confirm it.

Phoenix
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Last edit: by phoenix.

Memory Foam Mattress Weight 24 Sep 2013 18:44 #9

...for that matter, maybe they just sent an entire Tiffany bed, and both the top and bottom are wrong, if that's indeed what has happened. Both bases are probably the same thickness. 2lbs foam vs 5lbs latex should be easy enough to weigh though, or as Phoenix and others have pointed out, the materials tag should identify contents.

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Last edit: by dn.

Memory Foam Mattress Weight 25 Sep 2013 09:21 #10

  • Everready073
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Any update on this. I have decided on memory foam and they were in my top 3 due to their high density foam. If this is accurate I will be reconsidering

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