Thermocool™ Back Sleeper Pillow

The Coolest Pillows for the Hottest Women

"It is actually cold when you squeeze it. I don't understand how but I can feel it pulling the heat out"

Proudly Made in Australia
100% Australian Owned & Operated

Refreshing coolness for your head and face, all night long.

We designed this Phenxx Thermocool™ Cooling Back Pillow to offer natural relief from hot flushes, night sweats, and uncomfortable menopause symptoms - specifically for those of you who sleep on your back. Wake up ready for your day after a night of cool, restful sleep.

What’s the secret? Our Thermocool™ Back Pillow uses Reactex® technology to nurture you with a fresh, cool feeling all through the night. It takes just 8 seconds of natural pressure to initiate the relaxing cooling sensation, and it naturally “recharges” itself through the day, ready to welcome you back to a restorative sleep whenever you’re ready.

Stiffness? Pain? Hot nights? Restlessness? We’ve been there. The Thermocool™ Pillow for back sleepers as a natural, hygienic, safe way for you to beat discomfort. It’s not a pillow; it’s an investment in yourself.


Stay cool and comfortable throughout the night, thanks to our cutting-edge Reactex® technology. This pillow is designed to draw heat away from your body, storing it within its core to maintain a consistently cool surface. The Thermocool™ technology ensures you remain at the perfect temperature, preventing overheating and enhancing the quality of your sleep.

Pressure-Activated Cooling

Activated by your body pressure, the cooling sensation begins as soon as your head touches the pillow. Within just 8 seconds, you'll feel the remarkable cooling effect, designed for faster, deeper sleep. This feature is especially beneficial for back sleepers, ensuring the back of your head and neck stay cool and comfortable.

30-day Return Policy

We are so confident in the transformative power of our cooling pillow that we offer a 30-day return policy, inviting you to experience its remarkable impact on your sleep, risk-free. Upgrade to a cooler, more comfortable sleep experience tonight.

Product Details:

  • Size: 60cm x 40cm x 12cm, designed to be the perfect match to the neck and head for back sleepers.
  • Cover Material: 100% Polyester, offering a soft and breathable surface for optimal comfort.
  • Filling Material: 100% Polyester with integrated PCM technology for dynamic cooling.
  • Comfort Level: Medium firmness, providing balanced support for back sleepers.
  • Cooling Technology: Features advanced Phase Change Materials technology, meaning it takes heat out and replaces it with coolness. A pillow that actively regulates temperature for a cooler sleep experience.
  • Health and Safety: Hypoallergenic materials and OEKO-TEX Standard 100 certified, ensuring a safe and healthy sleep environment.
  • Weight: Lightweight design for easy adjustment and handling.
  • Durability and Warranty: Built to last, with a 1-year warranty for peace of mind.
  • Packaging: We are committed to zero waste. Our products have no plastic or waste components. The pillow arrives in an eco-friendly, handmade Italian satin drawstring bag for convenient storage or to use for travel later. All packaging is home compostable.

Embrace a cooler, more comfortable night's sleep with our advanced cooling pillow, thoughtfully designed with your health and comfort in mind.



All Night Cooling

Pressure Activated


Draws Heat From Head & Neck

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Amazing in Bed Guarantee

Free shipping over $100

Thermocool™ Back Sleeper Pillow

$299.00 AUD

"The worst part is I'm on fire in bed and waking up completely soaked. Unbelievably the pillow really helped"

- Theresa M.


Reactex® Cooling Technology

What is it?
Reactex® technology, mirroring a central air system with three cooling layers in which each layer is more effective than the last, draws and stores body heat within the pillow for sustained overnight cooling. Dive into a night of undisturbed sleep with Phenxx's Thermocool pillows, where advanced Reactex® technology ensures lasting comfort.


Body-Pressure-Activated Cooling

In just 8 seconds after you rest your head, you’ll feel the luxurious, nurturing, cooling effect of the Thermocool™ pillow. Its unique self-recharging feature guarantees consistent cooling every night, offering long-lasting comfort. Made with no toxins or harmful chemicals, it’s as good for the mind as it is for the body.

Feel the Love

Care & Storage Instructions

Care Instructions

Designed for Durability and Ease of Care Not only is the Phenxx Thermocool™ Back Sleeper Pillow durable, but it's also easy to care for, ensuring long-lasting cooling and support. Enjoy the benefits of a pillow that remains an integral part of your sleep routine for years to come.

Take proper care of your Phenxx Thermocool™ Pillow:

  • Spot clean only
  • Use mild detergent
  • Do not bleach
  • Do not iron
  • Do not dry clean
  • Do not use solvents
  • Air dry away from the sun


Storage Instructions for Optimal Longevity:

To ensure your Thermocool™ Pillow maintains its superior cooling performance and structural integrity, follow these simple storage guidelines:

  • Location: Store the pillow in a cool, dry place away from direct sunlight. Excessive heat or moisture can affect the cooling technology and material quality.
  • Ventilation: Ensure the storage area is well-ventilated. This helps prevent any buildup of moisture and keeps the pillow fresh.
  • Protective Covering: Use a breathable fabric cover or pillowcase to protect the pillow from dust and dirt while stored. Avoid plastic bags as they can trap moisture, potentially leading to mildew. We recommend storing the pillow in the beautiful satin drawstring bag it arrives in.
  • Avoid Compression: Store the pillow without any heavy objects on top. Extended compression can deform the pillow, affecting its comfort and support.
  • Cleaning Before Storage: If the pillow will be stored for an extended period, consider cleaning the cover according to the care instructions. Ensure the pillow and cover are completely dry before storage.

By adhering to these storage instructions, you can help extend the life of your Thermocool™ Pillow, ensuring it remains a refreshing part of your sleep environment for years to come.

Terms & Warranty Information

Product Terms and Conditions & Warranty Information

Find all our product terms and conditions, warranty information and manufacturing details here.

Risk Free Returns

30 Day Returns

We are so confident in the transformative power of our cooling pillow that we offer a 30-day return policy, inviting you to experience its remarkable impact on your sleep, risk-free. Upgrade to a cooler, more comfortable sleep experience tonight.


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