120-night sleep trial with comfort guarantee
Free shipping on orders over €49
Finance your purchase for up to 40 months interest-free
The Flex Nube Junior Foam A kids mattress is a purpose-built sleep solution for active children and teenagers, inspired by one of Flex's best-selling adult models and reimagined for younger sleepers. Its Minipocket Spring core (8 cm) delivers point-by-point body adaptation that supports healthy spinal alignment throughout the night — a genuine benefit for growing bodies that need proper postural support during sleep.
The upholstery combines a heat-sensitive memory foam layer with hypoallergenic fibres and Confort System material on both faces of the mattress, creating a soft, progressive feel that is comfortable in any sleep position. The double-sided construction allows regular rotation for more even wear and a longer product life.
At just 20 cm in height, the Flex Nube Junior Foam A is slim enough to fit comfortably on bunk beds, cabin beds and even storage beds without raising the overall sleeping surface too high — while still delivering a level of sleep quality that goes well beyond what a standard children's foam mattress can offer. The pocket spring and breathable upholstery combination ensures continuous airflow inside the mattress, keeping the surface fresh and cool even during the warmest months — ideal for children who sleep warm or lead a high-energy daily life. Pairs perfectly with the Flex Nube Junior B (18 cm) for a fully matched bunk bed setup.

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.

Viscoelastic
Adaptable material that adapts to the body and reduces pressure points, providing a soft welcome and greater comfort when resting.
Hypoallergenic Fibers
Breathable fiber padding that helps maintain a stable temperature and promotes a more hygienic and healthy rest.
Recyclable Polyeter
Support material that provides stability to the layers top of the mattress and contributes to improving its durability.
Confort System+®
High-density material that distributes the weight evenly and improves adaptability across the entire surface of the mattress.
Pocket Spring Premium® Mini 8 cm
Pocket spring core that provides independence from beds and progressive firmness adapted to the body.
| Cloud Junior Visco A Mattress | Sonpura Play Mattress | Tetrix Youth Mattress | |
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| Marca | |||
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| Firmeza | |||
| Firmness | 8 / 10 | 7 / 10 | 8 / 10 |
| Precio | |||
| Precio | €36900 | €30450 | €38900 |
| Galardon | |||
| Galardon | - | - | Best mattress for the transition from crib to senior bed |
| Tejido Exterior | |||
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| Capas del Acolchado | |||
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| Núcleo | |||
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| Encapsulado perimetral | |||
| Encapsulado perimetral | Si | Si | Si |
| ¿Es desenfundable? | |||
| ¿Es desenfundable? | ![]() | ![]() | ![]() |
| Tratamientos termorreguladores | |||
| Tratamientos termorreguladores | - | - |
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| Transpirabilidad | |||
| Breathability | 8 / 10 | 8 / 10 | 10 / 10 |
| ¿Es idóneo para camas articuladas? | |||
| ¿Es idóneo para camas articuladas? | ![]() | ![]() | ![]() |
| ¿Es simétrico? | |||
| ¿Es simétrico? | Si | No, Colchón a 1 sola cara | No, Colchón de 2 caras diferentes |
| IMC's Recomendados | |||
| IMC's Recomendados |
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| Soporte más recomendado para este colchón | |||
| Soporte más recomendado para este colchón |
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| Todo tipo de bases y somieres. |
| ¿Admite la opción de colchones gemelos? | |||
| ¿Admite la opción de colchones gemelos? | ![]() | ![]() | ![]() |
| Período de garantía | |||
| Período de garantía | 3 años | 3 años | 3 años |
| Altura | |||
| Altura | 20 cm | 21 cm | 20 cm |
| ¿Cupón promocional especial activo? | |||
| ¿Cupón promocional especial activo? | | Al comprar un Colchón + Base/Canapé Sonpura, de la misma medida, tienes 5 años de GARANTÍA en tu equipo de descanso. | Al comprar este colchón llévate de REGALO una almohada juvenil de fibra. |
Express Shipping in 48/72 hours
The Express Shipping Service in 48/72 hours, for this mattress, is available throughout the Peninsula and the Balearic Islands.
The Mattress will be sent vacuum packed.
* This Service is incompatible with the Old Mattress Removal Service.
120 Night Trial
At Colchón Exprés we want you to try your mattress comfortably at home. That's why we offer a 120-night trial on our best-selling mattresses.
If you're not convinced, you can exchange it for another one of the same size that you like better, before the trial period ends.
Check the 120-night trial terms and conditions to find out all the details of the promotion.
Interest-Free Financing
Pay in up to 40 months Interest-Free. You can finance any order from €90, as long as the minimum monthly payment is at least €12.
Super convenient. We'll call you and one of our advisors will guide you through the financing process over the phone.
No strings attached. You can make early payments whenever you want, with no penalties or hidden tricks.
Your data protected. We don't sell your data to third parties.
For more information you can click here.
DOUBLE Sonpura Promotion
If you buy a Sonpura mattress together with a Sonpura Base, Fixed Canapé or Folding Canapé, of the same size, you will have:
45% Discount on the Base or Canapé, instead of the usual 30% (this discount will be applied directly in your cart).
5 year warranty on your equipment. rest.
*Promotion not applicable to Sonpura mattresses from the Micro range (Gaudí, Royal, Carisma and Titán) nor to the Spirit and Silence models from the Multiadapt range.