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

Simba Green OrganicvsTweak

Which one is best for you? Simba Green Organic vs Tweak - 2026 comparison by Vs Mattress

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Simba Green OrganicSale: Up To 55% OffTweakCheck current deal.

Simba Green Organic

by Simba · Hybrid (Organic Materials)

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

Simba Green Organic

Singlen/a

Double£2,299

King£2,399

Super King£2,749

Tweak

Single£595

Double£895

King£995

Super King£1,095

Essential information

	Simba Green Organic	Tweak
Type	Hybrid (Organic Materials)	Hybrid (foam & springs)
Launched	1979	2014
Brand	Simba	–
Made in	United Kingdom	United Kingdom
Unique points	The Simba GO hybrid mattress is very eco-friendly and is made up of 6 layers. Six layers? Yes. And every single one has a part to play in helping you sleep better: Breathable, GOTS organic cotton cover Breathable, recycled simba renew layer GOLS organic latex comfort layer Supportive aerocoil spring layer Zoned supportcore™ base Breathable 3d mesh	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	SIMBA - Engineered for Sleep	Tweak Hybrid Customizable Foam Mattress review - 2021

Certifications & trial

	Simba Green Organic	Tweak
OEKO-TEX®	No	Yes
CertiPUR-US®	Yes	Yes
Certifications	CertiPur-US®, OEKO-TEX®, Global Organic Latex Standard (GOLS)	–
Other certification info	100% Recyclable Materials, Organic 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

	Simba Green Organic	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 Simba Go Hybrid is a medium-firm mattress, however, 95% of Simba sleepers love their mattress. If it doesn't work for you, Simba mattresses that are returned are either refurbished or recycled; they never go near a landfill site.	–

Construction & materials

	Simba Green Organic	Tweak
Layers	GOTS organic cotton cover, recycled simba renew layer, GOLS organic latex comfort layer, Supportive aerocoil spring layer, Zoned supportcore™ base, Breathable 3d mesh	foam, customisable comfort zones with 4 different densities of deep foam, individual pocket springs
Cover	GOTS organic cotton cover: Pure, cooling, organic cotton, certified to the Global Organic Textile Standard (GOTS) a body which monitors production from field to factory.	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	No	No
Ergonomic handles	Yes	No
Comfort	A sumptuous layer of anti-allergenic Simba Renew fibres (up to 75% recycled) under the cotton cover aids airflow and discourages dust mites. A perforated natural latex layer offers increased breathability, as well as superbly luxurious support and pressure distribution.	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	Up to 2000 of our patented, cone-like springs offer superior body support and increased airflow through your mattress. With up to 900 pocketed springs, engineered to offer 5 zones of targeted support for areas such as hips and shoulders.	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

	Simba Green Organic	Tweak
Available sizes	Single, Double, King, Super King	Single, Double, King, Super King
Dimensions	Single depth: 30 cm	Single depth: 25 cm
Single weight (kg)	24	23
Double weight (kg)	36	34
King weight (kg)	43	40
Super King weight (kg)	51	47

FAQs

Simba Green Organic

Is the Simba GO mattress any good?

The Simba Go mattress offers a sustainable design, combining patented technology with natural, biodegradable latex for excellent pressure relief and cushioning. Constructed with six layers, each element contributes to enhancing your sleep experience. It stands out as Simba's most eco-friendly mattress, with half the carbon footprint of traditional hybrids. This blend of natural, organic materials with advanced technology makes it an attractive choice for those prioritizing both comfort and environmental impact.

Are Simba Go mattress bouncy?

The Simba Go mattress does possess some level of bounce due to its supportive Aerocoil spring layer, consisting of up to 2000 patented cone-like springs that enhance body support and improve airflow. It also features a zoned SupportCore™ base with up to 900 pocketed springs for targeted support, especially in areas like the hips and shoulders. However, its firmness is enhanced by a GOLS Organic Latex comfort layer, a perforated natural latex layer that not only increases breathability but also provides luxurious support and excellent pressure distribution.

Is the Simba Go mattress hot?

The Simba Go mattress is designed with several features that promote breathability, which should help keep you cool while you sleep. The GOTS organic cotton cover and a 3D mesh layer both support maximum airflow through the mattress layers. It also features an Aerocoil spring layer with up to 2000 springs, promoting increased airflow, along with a SupportCore base with pocketed springs for targeted support. While the latex layer might retain some heat, this should be offset by the breathability of the other layers, and overall, heat retention shouldn't be a major issue.

Tweak

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Wrap up

Thank you for checking out this Simba Green Organic 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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