The 10 in. Tuft & Needle Diary

[phoenix]

Hi dwzemens,

I have had my T&N 10" for three weeks. I sleep alone in the bed and noticed yesterday that the side I sleep on is already noticeably softer than it originally was. The side I have not slept on is still noticeably firmer as delivered. The conclusion I have drawn is that there is a break in period where the mattress gets softer with use. It’s not simply a matter of having the mattress expanded over time as only the side that has been used has softened up.

There is a break in and adjustment period for a few weeks with any new mattress where the foams will lose any of their “false firmness” and the cover will loosen a bit and the materials will settle and this is completely normal (see post #3 here).

With foam materials what actually happens is that some of the thin “windows” in the foam cells break and open up which results in a slight loss of firmness and stiffness in the foam but once the break in process is complete after a few weeks then the firmness will stabilize and any further softening would be much more gradual over a much longer period of time.

I am hopeful this is part of the engineering and design and not a sign that the mattress might began to sag over time. Time will tell.

The Tuft & Needle mattress uses high quality/density and durable materials (2.8 lb high performance polyfoam in the comfort layer and 1.8 lb polyfoam in the support core) so outside of the normal break in period for any foam material in the first few weeks you can expect that there won’t be any issues with premature foam softening or sagging over the course of the useful life of the mattress.

@sheep123,

We have rotated our mattress once- so the head portion of the bed is on the foot portion (not “flipped”, but rotated). I am hoping this will lengthen the time the mattress lasts. I don’t know how often to do this, but planning every 6-8 weeks.

You can see the rotation schedule that I would suggest in post #2 here.

Phoenix