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Goes like a dream with


Engineered for cool comfort

We’ve combined our technologically advanced materials with pure cotton to provide an incredibly light but warm duvet, designed to offer a fresher night’s sleep.

Cotton Cover with Stratos®️

Pure cotton cover with ‘cool-touch’ Stratos® technology, designed to draw heat away from the body and providing an instant freshness (blue binding for 3.5 Tog).

  • Cotton Cover with Stratos®️
  • Simba Renew™ Clusters
  • Breathable Cotton Cover
  • Cotton Cover with Stratos®️
  • Simba Renew™ Clusters
  • Breathable Cotton Cover

5Ingenious things about the Simba Hybrid® 3-in-1 Duvet

We use our engineering expertise and the latest technology to bring you a better night’s sleep. And here’s how it all works in the Simba Hybrid® 3-in-1 Duvet

Fresher sleep, all year round 

We’ve designed a set of two duvets that work in perfect harmony to keep you at the best temperature for sleep, every single night of the year.

All year:
use the Spring/Autumn duvet (grey binding, 7 Tog)

Warmer nights:
use the Summer duvet (blue binding, 3.5 Tog)

Extra chilly nights:
snap the two duvets together for a thermal value of 10.5 Tog.

The 3-in-1 duvet includes a Simba storage bag for whichever duvet is not in use.


The gentle genius of Simba Renew™ 

This is our (very fluffy) alternative to feather and down; it’s made from recycled PET bottle fibres. The fibres are combed and folded into airy, downy clusters, forming a super-soft material that offers optimum warmth.

The Simba Renew fibres in our 3-in-1 Duvet are also blended with 20% Modal; Modal is derived from natural wood pulp, it’s said to help wick moisture away from the body.


Stratos® - your duvet thermostat

All our duvets have one side of ‘cool-touch’ Stratos® technology; this means it’s designed to feel fresh to the touch, and it supports the dissipation of any excess heat to keep you fresh and dry. Just make sure this side is closest to your body as you sleep.

The magic of Modal

A technologically advanced material, Modal is derived from plants like beech wood pulp, sourced from responsibly managed forests in Europe and under responsible conditions where possible.

The 3-in-1 Duvet filler features a blend of Modal with Simba Renew™ where it adds long-lasting softness and shape, even after repeated washing. We also combined ultra-smooth Modal fibres with cotton on one side of the cover, where it’s designed to support the body’s natural cooling process by carrying away moisture to keep you feeling cool and dry.

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 award

  • “Our testers told us that the weight was ‘just right’ regardless of whether they prefer a light or heavy duvet'.”

Happy Sleepers

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


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