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Flex Kids Mattresses

Discover our collection of Flex kids mattresses, specially designed to provide the comfort, support and breathability children and teenagers need during every stage of growth. Flex combines advanced sleep technology with durable materials to ensure healthier and more restorative sleep.

These mattresses offer balanced firmness and ergonomic support to help maintain proper spinal alignment while delivering excellent comfort night after night. Breathable fabrics and adaptive materials also help create a fresher and more hygienic sleep environment.

Explore the best Flex mattresses for kids and teenagers at Colchón Exprés and find the

Flex Selection MattressesFlex Selection Mattresses

Flex Ultimate MattressesFlex Ultimate Mattresses

Flex DealsFlex Deals

Flex AirVex MattressesFlex AirVex Mattresses

Flex Multielastic Spring MattressesFlex Multielastic Spring Mattresses

Flex Pocket Spring MattressesFlex Pocket Spring Mattresses

Flex Memory Foam MattressesFlex Memory Foam Mattresses

3 Item(s)

  1. Flex Nube Junior AirVex B Kids Mattress

    50%

    OFF

    Colchón Flex Nube Junior Airvex B
    • Fabric: High-weight Premium Stretch, elastic and breathable
    • Temperature regulation: Optigrade® system for balanced temperature and humidity throughout the night
    • Fill: Hypoallergenic fibres to reduce the risk of allergies
    • Protection: Total Protect treatment against dust mites, bacteria and mould
    • Core: High-density AirVex® technical foam (14 cm) for firm, durable support and correct spinal alignment
    • Technology: Poly System for improved stability, ventilation and motion isolation
    • Height: approx. 15 cm
    • Use: Single-sided mattress, ideal for cabin beds and bunk beds

    save 50% was €498.00

    €249.00 VAT included.

    Pay in up to 18 installments of €13.83/month INTEREST FREE! (+ info)

    Free shipping

    View Details

  2. Flex Nube Junior B Kids Mattress

    50%

    OFF

    Colchón Flex Nube Junior B
    Breathability
    Firmness
    4 Review(s)

    See reviews

    • Ideal for: Lower bunk of cabin beds and bunk beds
    • Firmness: Adaptive — conforms to each part of the body
    • Upholstery: Hypoallergenic fibres and ergonomic materials for a comfortable, cushioned feel
    • Core: Minipocket Spring pocket spring block, 8 cm — one of the few kids mattresses with a genuine pocket spring core
    • Highly breathable: Pocket springs and upholstery layers promote continuous airflow throughout the mattress for a fresher night's sleep
    • Height: approx. 18 cm

    save 50% was €618.00

    €309.00 VAT included.

    Pay in up to 24 installments of €12.88/month INTEREST FREE! (+ info)

    Free shipping

    View Details

  3. Flex Nube Junior Foam A Kids Mattress

    50%

    OFF

    Colchón Flex Nube Junior Visco A
    Breathability
    Firmness
    2 Review(s)

    See reviews

    • NEW — The Nube model reimagined for children and teenagers
    • Upholstery: Memory foam, hypoallergenic fibres and Confort System material on both faces for a comfortable, well-cushioned feel
    • Firmness: Medium
    • Core: Minipocket Spring pocket spring block (8 cm) for point-by-point body adaptation and healthy spinal alignment
    • Highly breathable: Pocket springs and upholstery materials allow continuous airflow for a fresher, healthier sleep environment
    • Double-sided construction: Rotate regularly for extended mattress life
    • Height: approx. 20 cm — compatible with bunk beds, cabin beds and storage beds

    save 50% was €738.00

    €369.00 VAT included.

    Pay in up to 30 installments of €12.30/month INTEREST FREE! (+ info)

    Free shipping

    View Details

3 Item(s)

  • On the little ones' nights

    As at Colchón Exprés we know that you are very concerned about the quality of your children's rest, we are sure that you will love seeing the collection of Flex Kids Mattresses that we have available in our online store and in our physical stores. All our children's mattresses combine the firmness and stability required and recommended during the growth of children, and also offer a very comfortable rest.

    To bed with Flex Kids Mattresses

    At Colchón Exprés we have mattresses of all sizes and materials so that you can choose those that best suit the needs of the little ones. Equip your children's bed with guarantees. Because with our rest products they will increase their learning capacity in addition to improving their behavior by having rested correctly.

  • Flex Kids mattresses that will make you dream

    All Flex Kids mattresses have anti-mite, anti-allergy treatments, and with certificates that guarantee that the raw materials used in their manufacture are not harmful to your health and take care of the rest of what you love most. We will tell you all the secrets of a 10-minute rest on our free telephone number or if you prefer, fill out the form and we will call you.

    Everything for the kings of the house

    Because one of the essential pillars in our life is based on a good rest, since we don't want anything to keep you awake, we bring your rest accessories to your home. You can also finance your purchases in easy interest-free installments or choose the payment method that best suits you. Do you want to enjoy the most optimal rest?

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(+34) 900 897 956
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120 Night Trial

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

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

double 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.