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Engineered for optimum comfort

Cotton outer with Stratos 'cool-touch' technology

Stratos® tech is designed to feel cool to the touch and supports instant freshness.

Summer duvet storage bag

Includes sturdy storage bag

  • Cotton outer with Stratos 'cool-touch' technology
  • Super-soft Simba Renew Bio™ fibres
  • Cotton cover (plain side)

5Ingenious things about the Simba Hybrid® Duvet

We use our engineering expertise and the latest tech to bring you a better night's sleep… Here’s how it works in our Hybrid® Duvet.

Renew Bio™

Exceptional comfort

Offering superbly light and gentle warmth, Simba Renew Bio™ forms the soothingly down-like centre of our Hybrid duvets. It’s made from recycled plastic fibres gently combed into soft, airy layers, which offers a down-like feel.

Designed to be breathable, it also allows plenty of airflow through the duvet fill for non–clammy warmth, and is an ideal alternative to other synthetic or natural fillers.


AKA your duvet thermostat

Getting too hot at night is a common and disruptive sleep problem, especially during warmer months.

That’s why all Simba Hybrid® duvets feature our ingenious Stratos® technology on one side; this means the fabric is designed to feel instantly cool to the touch, and supports the dissipation of any excess heat to keep you fresh and dry (yes, even when it has a cover on it). Just keep this side closest to your body as you sleep.

More responsible

More sustainable comfort

Simba Renew Bio™ is key to the superb comfort and quality of our pillows and duvets. It’s made from recycled PET bottle fibres. But it also biodegrades at end of life and almost totally dissolves in about two years when deposited in a landfill environment.

We also use natural, breathable cotton in our duvets, but we’re as careful as possible about where it comes from. We’re delighted to be member of the Better Cotton Initiative, and we strive to find more transparently sourced materials wherever we can.

Practical makes

User-friendly, thoughtful design

There’s no point having all this ingenious tech if you forget the practical stuff. So of course - we haven’t. Our Hybrid duvet is stitched into squares to prevent clumping, it’s machine washable (in a large enough machine) and dries more quickly due to the lightness and nature of the fill fibres.

We’ve also added a QR code to a label on the duvet for easy access to recycling or care advice – and we’ve popped another label at the foot end of the duvet, so you’ll always know which way round it goes.

B Corp Certified logo

Simba and Sustainability

We believe protecting the planet is as important as quality sleep.

We’re proud to be founding members of British Retail Consortium climate action roadmap and the UK’s first B Corp certified sleep brand; B Corp status is an accreditation that is only awarded to select businesses that promote social and environmental change through how they work and operate, something we consistently strive for.

Simba mattresses are made in the UK; we also aim to reduce waste by offering a specialist mattress recycling service as well as a certified refurbishment programme.

We aim to use packaging which includes recycled materials (or materials from approved FSC sources) as much as possible, and we endeavour to use more sustainable materials and processes across our range, including  Better Cotton and recycled materials wherever we can.

Find out more

Our awards

  • “Keeps you warm throughout the night with luxurious feeling material.”

  • “Good for year round use thanks to these heat control properties.”

  • “Evenly spread and stitched in square pockets for a nice distribution of padding.”

  • “Lifesaver for people who struggle to maintain a consistent body temperature at night.”

  • “The microfibre filling gains bonus points for being made from recycled plastic bottles, so you’ll be doing the planet a favour while you nod off in comfort”

Happy Sleepers

We rest better when we know your honest opinion of us. Check out reviews from Simba sleepers below.

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