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Zipper + foam + innerspring doesn't work? // Nest foam kinds 20 Oct 2020 18:45 #1

I was on a call with a retailer that seemed very knowledgeable, and when I asked about replacing latex with a (non-memory) foam in a zippered mattress, they said that they didn't recommend it because the foam when move around too much.
I'm curious if that is generally true? (and that's why it's attached often via various mechanisms)

I'm also relatedly, a little confused by Nest's Foam — they use 1.5 lb foam in addition to latex in their hybrid which is lower than seems to be recommended .

And it is zippered if I understand correctly, so I'm wondering if the idea is that the latex hold it in place?

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Zipper + foam + innerspring doesn't work? // Nest foam kinds 23 Oct 2020 14:13 #2

Hey arc,

Thanks for your question :) .

I was on a call with a retailer that seemed very knowledgeable, and when I asked about replacing latex with a (non-memory) foam in a zippered mattress, they said that they didn't recommend it because the foam when move around too much.
I'm curious if that is generally true? (and that's why it's attached often via various mechanisms)


The retailer you spoke with is referring to layer "shifting" which can happen when multiple foam layers are stacked within a single zippered cover. It isn't always an issue but if the retailer you are working with mentions it, he/ she would have a better understanding of how the effects of layering works within the constructions of the mattress you are considering, so I would defer to his/ her knowledge and experience. You are correct in that having the layers attached indeed prevents layer shifting.

I'm also relatedly, a little confused by Nest's Foam — they use 1.5 lb foam in addition to latex in their hybrid which is lower than seems to be recommended .


The 1" 1.5 lb. foam in the Nest Hybrid's base layer serves as a stability mechanism for the pocket coil support core. In the article you referenced, "Information About Polyurethane/ Polyfoam" , the durability concerns sited refer to polyfoams weighing less than 1.5 lbs. per cu. foot. TMU Trusted Member Nest Bedding offers mattresses with high quality components and construction, you would have no problems with this bottom foam pocket coil support layer in terms of durability.

And it is zippered if I understand correctly, so I'm wondering if the idea is that the latex hold it in place?

Not following your question here, arc. Perhaps if you ask it differently, I would better understand. Looking forward to hearing updates on your research as you have more to share.

Thanks,
Sensei
Sensei(@ TMU Team)
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