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9" Advanced Hybrid Mattress

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Introducing our 9" Premium Hybrid Mattress, a revolutionary sleep solution for your little ones. Engineered to provide unparalleled comfort and coziness, this mattress combines the exceptional features of our beloved 8" Original Mattress with a premium hybrid support system.

Add a Bedding Bundle to your cart in the drop-down for extra savings:
1 Waterproof Mattress Protector with Tote Bag
1 Organic Cotton Fitted Sheet
1 Organic Cotton Flat Sheet
1 Organic Cotton Pillow Case (Twin) - 2 Pillow Cases (Full & Queen)
1 Pillow (Twin) - 2 Pillows (Full & Queen)

Product Details

Our advanced hybrid system is designed with individually wrapped coils that ensure not only optimal spinal alignment but also offer exceptional motion separation. This means that whether your child is co-sleeping with you or sharing a bed with a sibling, their sleep will remain undisturbed and peaceful.

Experience the best of both worlds with our 9" Premium Hybrid Mattress, where cutting-edge technology meets ultimate comfort. Upgrade your child's sleep experience and provide them with the perfect environment for restful nights and rejuvenated mornings.

Mattress Layers

The 9" Advanced Memory Foam Mattress features a stretch-knit organic cotton cover with recycled PE side fabric.

- Cooling Phase Change Material

- 1” High Density Plush Memory Foam

- 1” High Resiliency Medium Energex Foam

- 7” 660-Count Pocketed Support Coils in a Queen with 3 Rows of Extra Firm Edge Coils


15-Year Limited Warranty. See our Warranty Page for more details.

100 Night Risk-Free Trial

We're so confident in our childrens mattress, we want you to try it risk free. If you and your little one don't fall in love with the mattress after 100 nights sleeping on it, just let us know. We'll pick it up and give you a full refund, no questions asked.


This mattress is compressed and rolled ship to your doorstep in 3-7 business daysl

9" Advanced Hybrid Mattress
  • Mattress Size: Twin
  • Add a Bedding Bundle?: No - Decline a Bedding Bundle

A Mattress Designed for Kids


    The unique properties of our CertiPUR-US ® certified memory foam allow it to adapt to your child’s unique temperature regulation needs. That means little bodies stay comfortably balanced from head to toe – so your child sleeps soundly through the night. This kids’ mattress contours to the shape of your child’s body to relieve pressure points and promote proper spinal alignment.

  • Pocketed Coils

    The state-of-the-art coil system excels in reducing motion transfer. This means that if your little one happens to doze off during a bedtime story their peaceful sleep won't be disturbed by any movements you make. You can enjoy reading to them or simply spending quality time together without worrying about disrupting their rest.


    Memory foam is not only hypoallergenic but also antimicrobial due to its inherent properties. Its dense structure and composition make it resistant to common allergens such as dust mites, mold, and pet dander. This inherent resistance helps create a cleaner and healthier sleep environment by minimizing the presence of potential allergens.


    Made from organic cotton, the sleep surface of the mattress cover allows for enhanced airflow and ventilation, promoting a cooler and more breathable sleep environment for your child. The natural properties of organic cotton help regulate body temperature, wick away moisture, and prevent heat buildup, ensuring a refreshing and comfortable night's sleep.


    The mattress cover is designed to be 100% machine washable, allowing for convenient cleaning. You can simply toss it in the washing machine whenever needed. For optimal results, wash the mattress cover on a cold setting and avoid using heat when drying.


  • CertiPUR-US ® Certified

    (Foam) - This certifies that the foam in our kids mattress is free of mercury, lead, PBDEs, formaldehyde, phthalates, and more.

  • OEKO-TEX ® Certification

    (Mattress Cover) - All of our fabric is certified to be free from various toxic chemicals such as formaldehyde, cadmium, nickel, and more, meeting both US & European standards.

  • CPSIA Certified

    (All Products) - Our products meet all standards from the Consumer Product Safety Commission, ensuring they're free of lead, phthalates, and other harmful chemicals. Specific certifications include:

  • Proposition 65 Compliant

    (All Products) - All of our products comply with Prop 65, which means we will disclose any chemicals known to cause cancer, birth defects, or other reproductive harm. Thankfully we don't make our products with these chemicals - so there's no need to worry about it.

Customer Reviews

Based on 725 reviews
Great products

Thank you!

Lindsay Menia
Great bed for my little one

My daughter has been loving her new bed. We are really impressed because it is extremely comfortable and she has been sleeping in later since she started sleeping in it. Money well spent!

Bed Snob says: Get this bed!

I used to own a luxury bed store, and for that reason, mattress shopping and receiving is usually less than fun. I am constantly comparing beds/mattresses to the very expensive and very amazing beds we sold....

Enter 5 Little Monkeys: I have a 3 year old who is transitioning to her big girl bed. Finding a mattress that is comfortable and isn't going to off gas, and isn't going to break the bank is a challenge. I was thinking we were going to get an Avocado mattress, but something said keep looking. I ordered and was really pleased with the price. It arrived quickly and we just set it up tonight for our daughter. She loves it! And she was BLOWN away by the monkey that came with it. The mattress protector and pillow are great too... I am a happy customer and will be referring everyone to 5 little monkeys!

A Lindsay
One complaint

My only complaint is the mattress protectors don't come in King sizes - would buy in a heartbeat

If only...

Ordered the sleep system and an additional twin mattress protector. Love it all so much, wish the protectors came in King sizes for my own bed