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Play mattress - Coral

European Union round flag icon

Handmade in Europe

Nordic minimal design with EU quality standards

Regular price $305.75 USD
Regular price $409.00 USD Sale price $305.75 USD
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In stock. Ships out in 1 day

This Montessori play couch is the ultimate set for endless fun and learning. It can be arranged into more than 40 different shapes, giving your child the ability to explore and discover new variations. This set is the best Montessori birthday or Christmas gift.

Icon to show product benefit - Keeps kids off screen. More active play timeKeeps kids off screen. More active play time
Icon for product benefit- Monboxy burns kids’ energy and reliefs their stress indoorsBurns kids’ energy and reliefs their stress indoors
Icon for product benefit - Soft play mattress set boosts creativity and open-ended playBoosts creativity and open-ended play
Icon for product benefit - The soft play mattress set fabric cover is removable and washableThe fabric cover is removable and washable
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  • 1. No sharp corners

    Have peace of mind knowing that your child can engage freely without the risk of injuries.

  • 2. Keeps kids off screens

    Unlimited number of ways to use our play sofas, kids can let their imaginations run wild.

  • 3. Hassle-free storage

    Our activity sofas are designed to be easily folded up, allowing for easy storage in small spaces.

  • 4. Washable & liquid repelling

    Our sofas come with a removable and washable fabric cover. Easy clean-up.

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Three kids playing with their Monboxy activity play set

Why is Monboxy good for your child?

  • Develops Gross motor skills
  • Boosts open-ended play
  • Improves problem-solving skills
  • Encourages independent play
  • Encourages curiosity
  • Increases spatial awareness
  • Montessori toy
  • Keeps kids off screens

3 base shapes to create unlimited fun

Close-up of what’s included

  • Coral base mattress Monboxy montessori sofa set shape

    1. One base mattress

    A thicker foam mattress with removable and washable covers. Folds up for minimal storage.

    Size: 66,93x33,46x5,9 in or 170x85x15cm

  • Coral thin mattress Monboxy montessori sofa set shape

    2. One thinner, more flexible mattress

    A thinner mattress that’s more bendy and flexible. Same removable cover. Folds for minimal storage.

    Size: 66,93x33,46x3,15 in or 170x85x8cm

  • Coral trapezoidal Monboxy montessori sofa set shape

    3. Two trapezoidal shape pillows

    Great building blocks for making creative shapes. Removable and washable fabric cover.

    Size: 22,05x22,05x12,2 in or 56x56x31 cm

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Closeup of Monboxy fabric with tag


Fabric: 100% polyester. Our fabric is OEKO-TEX® STANDARD 100 certified. This means you can be certain that every component, thread, button, and other accessory, has been tested for harmful substances and is harmless for human health.

Foam: Flexible polyether polyurethane foam. Received the same OEKO-TEX® STANDARD 100 certification, meeting the human-ecological requirements.

Weight: 34.17lb / 15.5kg

Learning new skills, one shape at a time

Unleash your child’s joy of exploration

A girl playing on the Monboxy coral play sofa set
Coral Monboxy set placed on the floor in a child's bedroom