🇬🇧 United Kingdom · Memory foam vs Hybrid (foam & springs)

SimbatexvsTweak

Which one is best for you? Simbatex vs Tweak - 2026 comparison by Vs Mattress

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SimbatexSale: Up To 55% OffTweakCheck current deal.

Simbatex

by Simba · Memory foam

Sale: Up To 55% Off

10 · 365-night trial

Tweak

by Tweak · Hybrid (foam & springs)

Check current deal.

10 · 100-night trial

Pricing by size

Simbatex

Single£679

Double£799

King£899

Super King£999

Tweak

Single£595

Double£895

King£995

Super King£1,095

Essential information

	Simbatex	Tweak
Type	Memory foam	Hybrid (foam & springs)
Launched	1979	2014
Brand	Simba	–
Made in	United Kingdom	United Kingdom
Unique points	Simbatex mattress foam guarantees 30x more airflow and superior elasticity than traditional memory foam, and it is graphite infused to control heat. Here's the four layers: Anti-allergenic, removable knitted cover Cooling, cushioning simbatex® comfort layer Supportive simba-response foam layer Zoned, high density foam base	Four layer, customisable hybrid construction: 4cm foam 5 customisable comfort zones with 4 different densities of deep foam 10cm individual pocket springs (coil count: 1,000) The springs are encapsulated in a high density, supportive foam that makes up the base and the mattress walls. They're then covered in a medium density reflex foam that ensures you feel the bounce of the springs below. Note: This brand has changed hands so many times, it's hard know the current quality of the mattress.
Video	The Simba Hybrid® Mattress - The Average Person Spends 26 Years and 3 Months In Bed	Tweak Hybrid Customizable Foam Mattress review - 2021

Certifications & trial

	Simbatex	Tweak
OEKO-TEX®	Yes	Yes
CertiPUR-US®	Yes	Yes
Certifications	CertiPur-US®, OEKO-TEX®, B Corp™	–
Other certification info	100% Recyclable Materials, Pro-Planet, Carbon Neutral Delivery	–
Sleep trial	365 nights	100 nights
Warranty	10	10
Free shipping	FREE	FREE
Free returns	YES	–
Pay later	Yes	No
Delivery info	Simba offers FREE carbon neutral standard delivery with a two-person delivery crew. Simba can also take away your old mattress for recycling once you have your new one. Delivery usually be within 3 business days if you order before 2pm, and within 4 business days after 2pm.	With no hidden charges, we offer all our mattresses with a free two man delivery service within 3 working days to mainland UK.

Firmness & feel

	Simbatex	Tweak
One firmness fits all	Yes	No
Select your firmness	No	No
Adjustable firmness	No	No
Half and half firmness	No	No
Flippable / reversible	No	No
Firmness info	The Simbatex® Essential is a medium-firm mattress. The premium foam will gently mould and support your body, while keeping you cooler than regular memory foam mattresses.	–

Construction & materials

	Simbatex	Tweak
Layers	Anti-allergenic, removable knitted cover, Cooling, cushioning simbatex® comfort layer, Supportive simba-response foam layer, Zoned, high density foam base	foam, customisable comfort zones with 4 different densities of deep foam, individual pocket springs
Cover	Removable knitted cover: A zipped, breathable cover, free from harmful substances (Oeko-tex 100 Standard) and suitable for allergy sufferers.	Hypo-allergenic, plush fabric cover. Our visco-elastic polyester blend cover provides a breathable sleeping surface. It's fire resistant and provides temperature control, plus it's hypo-allergenic making it ideal for those with dust or skin allergies. The zippable cover can be machine washed at 30 degrees and air dried, keeping your mattress fresher for longer.
Machine-washable cover	Yes	No
Ergonomic handles	Yes	No
Comfort	The soft CertiPUR® foam provides superior elasticity and 30x more airflow than memory foam. Infused with heat absorbing graphite.	The Tweak mattress (formerly known as the Nrem mattress) is designed to help all sufferers of chronic pain, including back pain. You can design your very own sleep experience by adjusting the foam tablets inside the mattress to give bespoke comfort and support to suit your specific pain needs. Pressure relieving, cooling comfort layer. This 4cm deep comfort layer contours and cushions the body for a greater level of comfort. The open cell structure wicks away moisture and keeps you cooler for longer.
Support	The Simba response foam is a firmer, open cell foam that offers excellent support and maintains airflow thanks to a less dense structure. It combines with a crenelated, high-density foam base provides zoned pressure relief to the potential problem areas like the shoulders and hips.	5 customisable comfort zones with 4 different densities of deep foam. We use highly resilient Polyurethane foam in super soft, soft, medium and firm densities so you can get comfort and support in all the right places. This foam bounces back quicker than standard memory foam so you can turn over without feeling stuck. Our 5 comfort zones can be changed at any time so you can get your best night's sleep. 1,000 individual pocket springs for superior support and bounce. 1,000 full size pocket springs make up the mattress core. They're individually wrapped and move independently as you sleep, so you won't be disturbed by your partner's tossing and turning during the night. Our springs measure 10cm high and have a gauge of 1.5mm. As the springs are encapsulated in highly resilient base foam you get edge-to-edge support.
Posts	–	–

Size & weight

	Simbatex	Tweak
Available sizes	Single, Double, King, Super King	Single, Double, King, Super King
Dimensions	Single depth: 19 cm	Single depth: 25 cm
Single weight (kg)	21	23
Double weight (kg)	29	34
King weight (kg)	34	40
Super King weight (kg)	40	47

FAQs

Simbatex

How firm is the Simbatex foam mattress?

The Simbatex foam mattress has a firmness rating of 8/10, suggesting that it falls on the firmer side of the scale. This indicates that the mattress provides substantial support, making it an excellent choice for those who prefer a firmer sleeping surface or need additional back or joint support. However, individual comfort can vary, and it's always a good idea to try a mattress during the trial period to ensure it suits your personal preferences and needs.

Is the Simbatex foam mattress any good?

The Simbatex foam mattress is a quality product featuring four layers for support and cooling. Its open cell structure ensures enhanced airflow, providing 30 times more breathability than traditional memory foam. Infused with graphite, the foam regulates heat effectively, offering a balanced sleep environment. This mattress offers a plush yet supportive feel without common memory foam drawbacks like overheating or excess sinking.

What is Simbatex foam?

Simbatex foam is a unique material created by Simba, specifically designed to enhance cooling and breathability in their mattresses. It features an open-cell structure that promotes air circulation, helping to regulate temperature and keep the mattress cool. Additionally, it incorporates graphite particles which help to draw heat away from the body. This allows users to enjoy the plush, comfortable feel of foam without experiencing the overheating or excessive sinking often associated with traditional memory foam.

Tweak

No FAQs yet.

Wrap up

Thank you for checking out this Simbatex vs Tweak mattress comparison. We have tried to compare all the necessary information to help you choose which mattress is the most suitable for you.

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