How on Earth Does a Tree Become a Duvet?

From eucalyptus tree to soft, breathable fibre, discover how an unlikely material becomes a better way to sleep.

How on Earth Does a Tree Become a Duvet?
Soft cotton paired with breathable tree fibre.

A duvet made from trees.

Say it out loud and it sounds like a strange thing to put on a bed. Trees are hard, rough, and about as far from cosy as a material can get. So how does one end up filling the thing I sleep under every night? And how is it even possible let alone comfortable?

Turns out it already has, for years, in places I'd never thought to check. Tree fibre is in plenty of the clothes hanging in my wardrobe, in sportswear, towels, bedding from brands I've probably bought without noticing. It's also the whole idea behind Larke's Nature's Blend duvet: soft cotton paired with breathable tree fibre. The tree-to-duvet idea isn't new or gimmicky, it's just not something I'd ever seen explained properly.

In this Snooze
  1. Turns out this already happens
  2. What's actually inside a tree?
  3. How it happens
  4. Reducing waste
  5. It doesn't feel like a tree at all
  6. Why it's actually better for sleep
  7. Which brings us back to trees

Turns out this already happens

Turning something hard into something soft isn't actually unusual. We just don't think about it very often.

Paper is the easiest example. Wood goes in one end of a mill, and a thin, soft sheet comes out the other. Nobody blinks at that anymore, because it's been happening for centuries and paper doesn't feel remotely like a tree.

Fabric works the same way. A stiff, structural material gets broken down and rebuilt into something completely different from where it started. Tree fibre for bedding follows the same basic principle as tree fibre for paper.

Once I saw it that way, a duvet made from trees doesn't sound so weird anymore.

What's actually inside a tree?

Every tree is holding onto something useful: cellulose, the natural material that gives it structure and strength. It's the reason a tree trunk can hold its shape and stand up to the wind. Cotton has cellulose in it too, which is part of why tree fibre and cotton sit so comfortably together in a duvet, and why Larke paired the two for their Nature's Blend duvet.

The wood they use comes from eucalyptus trees, grown specifically for this kind of use and responsibly sourced. They're not rare, nor endangered, just fast-growing trees doing what they're grown to do.

How it happens

Getting from a solid trunk to a soft duvet filling happens in stages, and each one is easier to picture than it sounds.

  • Wood
    Eucalyptus wood is broken down.
  • Pulp
    The wood becomes a smooth pulp.
  • Fibre
    The pulp is pushed through tiny openings to form fine fibre.
  • Soft filling
    What started as wood becomes light, smooth and breathable.

First, the wood is broken down into a smooth pulp which is essentially the same starting point as papermaking. This is where the cellulose gets released from the wood's structure.

Next, that pulp is dissolved and pushed through tiny openings, a bit like a fine showerhead, coming out the other side as thin, continuous fibre. The material hasn't changed, but its shape has completely. What comes out doesn't look, feel, or behave anything like the wood it started as.

Finally, those fibres are washed, dried, and prepared before they become the soft filling sitting inside a duvet.

None of this is as simple as it sounds when you read it in three short paragraphs. Getting a rigid material to behave like a fine, breathable fibre takes a fair amount of getting right, but the result is meant to feel effortless, even if the process behind it isn't.

Dont picture the tree.

By the time it reaches your duvet, the wood been transformed into sfot, smooth fibre.

Reducing waste

One of the parts of this process I like most is that very little goes to waste. Rather than using the material once and throwing the rest away, most of what goes into turning wood into fibre gets captured, cleaned, and used again, and that's genuinely one of the things that sold me on it.

I'm fairly picky about what goes into my bedding these days, and plastic-based fillings have always bothered me, sitting in landfill for decades after I've moved on to something else. Wood-based fibre doesn't work that way. I'd rather not be part of that problem every time I climb into bed.

It doesn't feel like a tree at all

By the time the transformation is finished, there's nothing left that resembles where it started. The fibre is soft, light, and smooth, closer to a fine cotton than anything I'd associate with a tree trunk. I genuinely wouldn't have guessed it was once wood if nobody had told me, which, if I think back to paper, shouldn't come as a huge surprise.

I genuinely wouldn’t have guessed it was once wood if nobody had told me.

Why it's actually better for sleep

None of this would matter much to me if it didn't also make for better sleep. Thankfully, it does, and this is where I get really excited about this duvet.

I'm menopausal, and temperature regulation at night has been a real issue for me for a while, hot flushes, waking up too warm, then too cold twenty minutes later. Since switching to Larke’s tree fibre duvet, I haven't had a single night where I've felt overheated or too cold. I put that down to how breathable and moisture-wicking the fibre is; it moves air and pulls moisture away rather than trapping it.

There's also something to be said for it being gentler on skin. Tree fibre like this is naturally smooth and low-friction, which people with sensitive skin or allergies tend to notice more than most. I've stopped waking up with that itchy, overheated feeling I used to get, and I think that's part of why.

Which brings us back to trees

So, how does a tree become a duvet? Through a process that's a lot less mysterious than it sounds: wood pulp, drawn-out fibre, and a loop that wastes as little as possible along the way. It sounds like an unlikely journey for something that ends up on my bed, but it isn't really. Trees have been turning into soft, useful things for centuries. Nature's Blend is just the newest one.

Honestly, understanding the process has changed how I think about bedding. I used to just buy whatever felt nice in the shop and not think much further than that. Now I care what a duvet is made from, not just how it feels on day one, but what happens to it in ten years' time. Sustainable, biodegradable, and something that works better for how my body regulates temperature; that's not a small thing to find in one product, and it's made for a much better night sleep.

Meet the real thing

Made from trees
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