Mattress In a Box Europe's Best Reviewed

Free most of UK delivery
100-night trial
10-year guarantee
0% finance payments

Which? Best Buy - Matresses December 2019

Cool Foam Mattress

Shop the sale

Sleep experts with over 83,000 five star reviews

Mattress buying made easy:
Free most of UK delivery
100-night trial
0% finance payments

The world's most five star reviewed mattress brand^*

Join thousands of happy sleepers on our mission to make the world a more peaceful place to be.

Peace at last!

Finally! I have a very restless sleeper for a husband and his constant moving around used to keep me awake. Not any more! He can move around all he likes and my side of the mattress remains still. My hip and back pain is definitely reduced. I can’t wait to get into bed every night. So comfy.

Emma C Verified buyer

22/10/18

Wouldn’t sleep with anyone else…

Since becoming a Simba convert, the pains and stiffness I used to experience in my lower back have all but disappeared. My quality of sleep is so much better. I have a very harmonious relationship with this mattress.

Sophie B Verified buyer

05/02/18

Comfortable and peaceful

Amazing mattress! The comfort of it has to be experienced to be believed. My partner is a light sleeper and used to wake up every time I moved in the night, but due to the foam type top, we now both sleep throughout the night.

Chris H Verified buyer

03/03/19

Another world of sleep!

Since getting our kingsize Simba mattress I have experienced a whole new world of sleep. The most telling tale is that I have been dreaming more frequently than I can remember doing for a long time. I believe this is due to experiencing quality sleep cycles and less disturbed sleep.

Amy C Verified buyer

14/08/17

See reviews

* Based on publicly accessible, unique, online reviews/review-specific information which are rated on a 5 point or star basis, relating to major mattress brands, collected from Amazon, leading third party review websites, and mattress brands’ own e-commerce sites, between 2 September 2019 and 17 September 2019 by GroupBWT, available on request from Simba Sleep Limited.

The award-winning Simba Hybrid^® Mattress

Good Housekeeping Institute

“Good housekeeping testers found it a complete 'dream to sleep on' and are all Simba converts”

Real Homes Love

“The Simba Hybrid stands out from the bed-in-a-box crowd. more responsive than all-foam mattresses and a well-supported and cool night’s sleep – hzar!”

Men's Health

“A mattress that was very well received by our testers thanks to balanced comfort and support. It feels premium in design and one that our testers looked forward to getting into at the end of their day.”

T3 Best buy

“For quite some time now, our favourite mattress has been the excellent Simba Hybrid memory foam pocket spring mattress”

Ideal Home

“If you prefer to be cosseted by a cloud-like mattress but your partner yearns for one that's on the firm side, then this 'fits-all' mattress might well be the answer.”

Meet the future of sleep.

We've brought together thousands of super-light comfort springs and support from precision engineered foam in perfect harmony.

Simba Hybrid® Mattress layers from top to bottom: sleep surface, Simbatex, pocket springs, Visco, base layer, bottom shell

Simba Hybrid® Mattress layers from top to bottom: sleep surface, Simbatex, pocket springs, Visco, base layer, bottom shell

Shop the mattress

Why Hybrid?

Foam Mattress

Soft but sinky

Responsive and comfortable but can be too soft and hot.
The Simba Hybrid® Mattress

The best of all worlds

Responsive comfort Cooling airflow
No motion transfer The right support
Spring Mattress

Firm but bouncy

Supportive and breathable but can be too firm and bouncy

What sets Simba apart

We turn the sleep world upside down

Other hybrid mattresses use chunky springs with sweaty padding on top. We redefined the spring to put cooling comfort near your body where you need it. Plus our bedding is inspired by astronauts to bring heat regulating innovation down to earth.

Tried and tested

We design with you in mind. We make bedroom tech for real people. We tested over 70 mattress prototypes against data from ten million sleepers’ body profiles, so we know our hybrid suits every body. And we tackle the problems like overheating that get in the way of good sleep.

We change the world through sleep

Good sleep literally changes how you see the world. From our game-changing products to our app, podcast and beyond, we want everyone to understand that sleep is as important as diet, exercise and other ways to live well.

We’re also in stores

We'll always give you 100 nights to try your mattress at home. But if you'd like to feel it for yourself first, here's where to find Simba on the high street.

Find nearby store

Beyond the bedroom

Simba Sleep App

Our free sleep tracker offers tailored advice to suit your sleep style plus expert inspiration to #TryFor8 hours in bed from rugby stars Maro Itoje and Jamie Roberts.

Download for Apple Download for Android