Is this mattress suitable for people who are overweight or have a large build?

Yes, it has been specifically designed to offer maximum firmness , stability and resistance for people with high BMI, without compromising comfort.

Does it have independence of beds?

Although its core is made of continuous spring , the zonal reinforcement improves movement isolation, offering a more stable experience when sleeping as a couple.

What is its real firmness?

The Flex Ever Strong has a very high firmness , being the firmest model in the Flex range. Recommended for those who need firm support without sagging.

What differentiates it from the old Flex Big&Strong?

The Ever Strong is its improved evolution. It maintains the reinforced Multielastic® core , but now incorporates Strong Support technology with three zones of differentiated firmness, better materials (such as Damascus fabric with viscose) and superior comfort layers. In addition, it offers a more hygienic and aesthetic experience, without losing robustness.

Colchón Exprés
Mattresses
Spring Mattresses
Flex Ever Strong Mattress

Flex Ever Strong Mattress

Strong Support continuous spring mattress with memory foam | Firmness: Very Firm

FREE Shipping, Assembly and Pickup

- On all orders with delivery in the Peninsula.

- Shipments to the Balearic Islands may entail an extra cost. (*See conditions)

- If you have any questions, consult one of our advisors through the chat or through our toll-free telephone number: 900 897 956.

100 night trial

You have 100 nights to try this mattress in the measurements: 90x190, 90x200, 105x190, 135x190, 150x190, 150x200, 160x200 and 180x200. We are convinced that you will love it. If not, you can exchange it for another mattress of the same size.

* See conditions

Now also with Bizum: You can now pay with Bizum at Colchón Exprés. If this is the first time you use Bizum for your online payments, follow the steps that we indicate here.

Finance up to 40 months

Pay up to 40 months WITHOUT INTEREST.

* See conditions

Details

The Flex Ever Strong mattress has been developed to deliver superior support for sleepers with a higher body weight, without sacrificing adaptability or comfort. Its Multielástic® Strong Support continuous spring core, reinforced across the lumbar and dorsal zones, provides an outstanding structural foundation and ergonomic pressure response that adjusts precisely to the body's needs. Combined with memory foam layers, hypoallergenic fibres and premium fabrics, this mattress sets a new standard for robust, high-quality sleep.

Key features of the Flex Ever Strong mattress:

Multielástic® Strong Support spring core (16 cm): continuous spring frame reinforced with differentiated firmness zones for lumbar and dorsal support.
High-density memory foam: ergonomic body adaptation and targeted pressure relief where the body needs it most.
Commodo+® and Confort System® Pro: comfort layers that distribute body weight evenly and eliminate pressure points.
HR perimeter support: lateral reinforcement for greater stability, durability and a larger usable sleep surface.
Hypoallergenic fibres + Total Protect®: guaranteed hygiene protection against bacteria, dust mites and mould.
Elastic damask fabric with viscose: elegant, soft, durable and premium in quality.
Felt Protect: internal protection layer against wear and deformation.
4 vertical handles: easy and practical mattress handling.
Generous height of 32 cm: ideal for larger sleepers or as a premium sleep upgrade.

Who is the Flex Ever Strong mattress designed for?

Ideal for sleepers with a higher BMI or those looking for an exceptionally firm mattress.
Perfect for those who need robust, long-lasting support without losing adaptive comfort.
Recommended for anyone who values hygiene, breathability and high-quality materials.
An excellent upgrade from the previous Flex Big&Strong model.

CONFIGURA Y COMPRA

Book a call with our experts
Do you need help? Book a free call, at a time and day that suits you, with one of our experts, from one of our physical stores. We will listen to your needs and tell you which mattresses or pillows best adapt to your way of sleeping, without any commitment.

Composition of the Flex Ever Strong mattress

Hypoallergenic Fibers
High-quality, compact, hypoallergenic and thermoregulating fiber, which offers excellent comfort and helps maintain a healthy and constant rest.
Memory Elastic
Filling with an open cell structure that guarantees self-ventilation and perfect adaptation to the body, giving only where pressure is exerted.
Commodo+® System
Material high density that progressively adapts to the body, eliminating pressure points and improving the quality of rest.
Confort System® Pro
High-density and highly durable material, which guarantees a homogeneous distribution of weight and maximum adaptability for a more balanced rest.
Multielastic® Strong Support continuous spring (16cm)
Double spring casing made of continuous wire in a crossed spiral, which guarantees optimal support. It incorporates Strong Support reinforcements in the lumbar area with two densities, offering 3 levels of differentiated firmness for a more precise and personalized rest.

Product technical info

Advantages

Firmness

High

Optigrade System

Thermoregulatory treatment of temperature and humidity.

Encapsulated

Exterior reinforcement of the entire spring block with high-density foam that guarantees greater comfort and greater durability and resistance

Confort System

High quality material that provides greater adaptation to the mattress surface

Independence of beds

1.- Maximum comfort. No matter how much your partner moves, you will not feel anything that wakes you up.
2.- Provides a correct and aligned posture, regardless of weight differences, thus avoiding the uncomfortable sensation of bringing the sleeper with less weight to the center of the mattress.

Technical info

Mattress type: Continuous spring Strong Support with memory foam.
Firmness: Very firm.
Core: Multielástic® Strong Support spring frame with lumbar reinforcement and 3 differentiated firmness zones.
Upholstery: Memory foam + hypoallergenic fibres.
Commodo+®: Progressive adaptation with no pressure points.
Confort System® Pro: Even weight distribution for extra durability.
Felt Protect: Internal protection against deformation and wear.
Optigrade® system: Active temperature regulation for a fresher, more comfortable sleep.
Total Protect system: Anti-bacterial and anti-dust-mite hygienic protection.
Perimeter support: Full high-density HR foam reinforcement.
Side handles: 4 vertical handles for easy handling.
Outer fabric: Elastic damask with viscose.
Finish: Double sewn welt, Tack&Jump quilting, anti-stain border tape.
Height: approx. 32 cm.
Delivery & assembly: Free delivery, installation and removal of your old mattress included.

CONFIGURA Y COMPRA

Sanitized Treatment

Sanitized® Certificate: Which guarantees that the materials used in its manufacture are respectful of humans and the environment

Member of ASOCAMA

Mattress comparison

	Flex Ever Strong Mattress	Ingravity Dual Comfort Mattress 2000 Springs	Bamboo Ingravity Mattress
		Seleccione marca: Seleccione modelo:	Seleccione marca: Seleccione modelo:
	(Ver Colchón)	(Ver Colchón)	(Ver Colchón)
	Marca
Marca
	Firmeza
Firmeza	10 / 10	9 / 10	9 / 10
	Precio
Precio	€59220	Desde: €89900	€50900
	Galardon
Galardon	-	-	Best Quality-Price Natural Mattress
	Tejido Exterior
Tejido Exterior	Tejido Damasco con viscosa	Tejido Frío Ice	Tejido con bambú
	Capas del Acolchado
Capas del Acolchado	Hypoallergenic fibers Viscoelastic Commodo+® System Total Protect Confort System® Pro Felt Protect	Viscoelastic Hypoallergenic fibers Microfiber fabric Removable topper (with summer and winter face) made of high-density memory foam	Natural cotton and linen fibers Hypoallergenic Fiber Softsense 32Kg/m³ Fiber bonding support Densitech 30kg/m³ Fiber buffer
	Núcleo
Núcleo	Multielastic® Strong Support Continuous Spring (16cm)	HR Soft Pocket spring block Felt HR Foam Block 25 kg/m³	Pocket Springs
	Encapsulado perimetral
Encapsulado perimetral	Si	Si	Si
	¿Es desenfundable?
¿Es desenfundable?
	Tratamientos termorreguladores
Tratamientos termorreguladores	Tratamiento Optigrade del Tejido Exterior	Tejido Frío	Algodón natural
	Transpirabilidad
Transpirabilidad	9 / 10	10 / 10	7 / 10
	¿Es idóneo para camas articuladas?
¿Es idóneo para camas articuladas?
	¿Es simétrico?
¿Es simétrico?	Si	No	No, Colchón a 1 sola cara
	IMC's Recomendados
IMC's Recomendados	IMC normal IMC alto	IMC bajo IMC normal IMC alto	IMC bajo IMC normal
	Soporte más recomendado para este colchón
Soporte más recomendado para este colchón	Base Tapizada, Canapé Abatible, Canapé Fijo, No recomendado somier de láminas ni camas articuladas	Base Tapizada, Canapé Abatible, Canapé Fijo, No recomendado somier de láminas ni camas articuladas	Base Tapizada, Canapé Abatible, Canapé Fijo, No recomendado somier de láminas ni camas articuladas
	¿Admite la opción de colchones gemelos?
¿Admite la opción de colchones gemelos?
	Período de garantía
Período de garantía	3 años	10 años	10 años
	Altura
Altura	32 cm	31 cm	29 cm
	¿Cupón promocional especial activo?
¿Cupón promocional especial activo?

FAQS

Is this mattress suitable for people who are overweight or have a large build?: Yes, it has been specifically designed to offer maximum firmness, stability and resistance for people with high BMI, without compromising comfort.

Does it have independence of beds?: Although its core is made of continuous spring, the zonal reinforcement improves movement isolation, offering a more stable experience when sleeping as a couple.

What is its real firmness?: The Flex Ever Strong has a very high firmness, being the firmest model in the Flex range. Recommended for those who need firm support without sagging.

What differentiates it from the old Flex Big&Strong?: The Ever Strong is its improved evolution. It maintains the reinforced Multielastic® core, but now incorporates Strong Support technology with three zones of differentiated firmness, better materials (such as Damascus fabric with viscose) and superior comfort layers. In addition, it offers a more hygienic and aesthetic experience, without losing robustness.

Opiniones de clientes

(5)

Laura19-05-2026

Marvelous. Couldn't expect better! Finally I don't have the feeling of sinking! Wonderful, I hope it lasts a long time.

Fran19-05-2026

Incredible. Super comfortable

Carlos19-05-2026

For a heavy person. Perfect for a heavy person, very good product.

María19-05-2026

My scoliosis has improved. They installed the mattress quickly and I am satisfied with its quality, the price is high but my health deserves it, my scoliosis in my back has improved a lot with the Flex strong mattress

Carlos19-05-2026

It's worth it. Very comfortable! It is worth spending money on quality.

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