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Australian Made

Australian Made

Proudly made in our Australian Factory

10-Year Warranty

10-Year Warranty

Covers you against faulty workmanship and materials

OEKO-TEX Certified

OEKO-TEX Certified

Certified safe fabric, free from harmful chemicals.

Opal Medium King Mattress

Opal Medium King Mattress

$2,598
$2,598 $2,598
Sale Sold out
Taxes included. Shipping calculated at checkout.

Sleep soundly on a medium-feel mattress featuring premium comfort foams and advanced support for all-night relaxation.

Feel
Size

Availability

Available for Pre Order

Check Delivery Fees & Pickup Locations

YOUR NEAREST STORE
In Store
Available to try in-store
Free pickup available
Delivery
Available to order
Our team will call within 1 business day to book your delivery
View full details

The Opal Mattress is proudly Australian Made, delivering exceptional comfort and support with a premium sleep system designed for lasting performance.

 

The 5 Zone Pocket Spring System provides targeted support to promote optimal spinal alignment, while the Track Edge Support System enhances edge-to-edge stability and maximises the usable sleep surface. Available in Soft, Medium, and Ultra Firm feels, and in Double, Queen, and King sizes, the Opal Mattress is designed to help you wake up feeling refreshed, supported, and ready for the day ahead.

Feature Benefit
Gel Infused Visco Peel Foam Cooling memory foam contours to the body while helping regulate sleep temperature.
Soft Convoluted Foam Egg-crate profile improves airflow and creates a plush, pressure-relieving sleep surface.
5 Zone Pocket Spring System Five targeted support zones help promote spinal alignment while individually wrapped pocket springs minimise partner disturbance.
Track Edge System Provides superior edge support and keeps you sleeping flat without that rolling out feel.
Premium Quilted Construction Fabric Layer, Polywool Fibre, Gusset Top Fabric, and Firm Sheet Foam combine for lasting comfort, breathability, and durability.
10-Year Warranty Backed by a 10-year warranty for long-term peace of mind and confidence in quality.
Mattress Size Dimensions (L × W × H) Weight
Double L 188 cm × W 137 cm × H 27 cm 37 kg
Queen L 203 cm × W 153 cm × H 27 cm 41 kg
King L 203 cm × W 183 cm × H 27 cm 46 kg

European Micro Tencel Stretch Knit Fabric

Soft, breathable, and moisture-wicking, Micro Tencel fabric ensures a cool and comfortable sleeping surface, keeping you refreshed throughout the night.

Euro Top Design for Comfort and Breathability

The Euro Top layer delivers plush cushioning and enhanced airflow, providing a luxurious sleep surface with long-lasting durability.

Micro Coil Small Pocket Coils

Strategically placed under the quilted layers, these micro coils provide precise, adaptive support that conforms to your body, relieving pressure points and enhancing comfort.

Cool Comfort Layer

Stay cool and relaxed all night with advanced materials designed to regulate temperature and provide a soothing sleep environment.

Bamboo-Infused Visco Comfort Layer

Bamboo-infused memory foam delivers eco-friendly, breathable, and responsive comfort while conforming to your body for exceptional pressure relief.

Bamboo Latex Comfort Layers

Naturally resilient and breathable, bamboo latex layers add an extra level of support and softness, ensuring a clean, sustainable, and luxurious sleep surface.

Dennison Internal Tufting

This premium tufting technique enhances the mattress’s durability, keeping layers securely in place while maintaining its luxurious comfort for years to come.

7-Zone Spring Air® High Coil Count Pocket Springs

Engineered with up to 70% Australian Iron Ore, this exclusive 7-zone pocket spring system provides targeted support for every area of your body, promoting proper spinal alignment and minimizing partner disturbance.

Full Foam Encasement for Edge-to-Edge Support

Maximize your sleeping area with consistent edge-to-edge support, eliminating sagging and improving mattress longevity.

Foam Comfort Layers

Layers of premium foam enhance the medium comfort feel, delivering a perfect balance of softness and structured support.

Medium Comfort Feel

Designed to suit a wide range of sleepers, the Brooklyn provides the perfect combination of plush comfort and ergonomic support for a deeply restful sleep.

CertiPUR-US Certified Foams

Sleep safely with foams that are free from harmful chemicals, offering a healthier and more environmentally friendly sleep environment.

Fabric Meets OEKO-TEX® Standard 100

Certified for hypoallergenic and eco-friendly properties, the fabric ensures a clean and safe sleeping surface, perfect for sensitive skin.

Mattress Profile Height: 37cm

Dimensions: (L x W cm)

  • Queen - 203 x 152cm (63kg)
  • King - 203 x 183cm (74kg)
  • Super King - 203 x 203

Base and accessories all sold separately.

Free In-Store Pickup:
Pick up your purchase from one of our 50+ stores across Australia. Once your order is ready, our team will contact you to arrange a convenient pickup time. Find your nearest store using the 'Find My Store' section above or click here.

Home Delivery:
Experience convenient delivery to your room of choice. Delivery fees start at $99 and vary depending on your location. Mattress unpacking and bed base assembly are included where applicable (leg attachment only).

Read our delivery policy here

If you’re not fully satisfied with your new mattress after giving it a fair try, you may exchange it for another comfort level or model within our range.

To be eligible for OMF’s 30-Night Comfort Guarantee, you must purchase a waterproof mattress protector along with your new mattress.


This guarantee is subject to the following terms:

  • You must sleep on your mattress for at least 14 nights before requesting an exchange.
  • Mattresses that are damaged or soiled (beyond fair wear and tear) will not be accepted.
  • The guarantee does not apply to floor/display models and special sizes.
  • If you choose a higher-priced mattress, you’ll need to pay the difference. No refunds or credits apply for lower-priced exchanges.
  • Only one exchange is permitted per purchase.
  • If a Comfort Exchange is approved, a standard fee of $95 will apply to cover administrative costs of this service. Additional delivery and/or collection fees may also apply.


For full details, learn more at our 30-Night Comfort Exchange page

The Opal Mattress is proudly Australian Made, delivering exceptional comfort and support with a premium sleep system designed for lasting performance.

 

The 5 Zone Pocket Spring System provides targeted support to promote optimal spinal alignment, while the Track Edge Support System enhances edge-to-edge stability and maximises the usable sleep surface. Available in Soft, Medium, and Ultra Firm feels, and in Double, Queen, and King sizes, the Opal Mattress is designed to help you wake up feeling refreshed, supported, and ready for the day ahead.

Feature Benefit
Gel Infused Visco Peel Foam Cooling memory foam contours to the body while helping regulate sleep temperature.
Soft Convoluted Foam Egg-crate profile improves airflow and creates a plush, pressure-relieving sleep surface.
5 Zone Pocket Spring System Five targeted support zones help promote spinal alignment while individually wrapped pocket springs minimise partner disturbance.
Track Edge System Provides superior edge support and keeps you sleeping flat without that rolling out feel.
Premium Quilted Construction Fabric Layer, Polywool Fibre, Gusset Top Fabric, and Firm Sheet Foam combine for lasting comfort, breathability, and durability.
10-Year Warranty Backed by a 10-year warranty for long-term peace of mind and confidence in quality.
Mattress Size Dimensions (L × W × H) Weight
Double L 188 cm × W 137 cm × H 27 cm 37 kg
Queen L 203 cm × W 153 cm × H 27 cm 41 kg
King L 203 cm × W 183 cm × H 27 cm 46 kg

Free In-Store Pickup:
Pick up your purchase from one of our 50+ stores across Australia. Once your order is ready, our team will contact you to arrange a convenient pickup time. Find your nearest store using the 'Find My Store' section above or click here.

Home Delivery:
Experience convenient delivery to your room of choice. Delivery fees start at $99 and vary depending on your location. Mattress unpacking and bed base assembly are included where applicable (leg attachment only).

Read our delivery policy here

If you’re not fully satisfied with your new mattress after giving it a fair try, you may exchange it for another comfort level or model within our range.

To be eligible for OMF’s 30-Night Comfort Guarantee, you must purchase a waterproof mattress protector along with your new mattress.


This guarantee is subject to the following terms:

  • You must sleep on your mattress for at least 14 nights before requesting an exchange.
  • Mattresses that are damaged or soiled (beyond fair wear and tear) will not be accepted.
  • The guarantee does not apply to floor/display models and special sizes.
  • If you choose a higher-priced mattress, you’ll need to pay the difference. No refunds or credits apply for lower-priced exchanges.
  • Only one exchange is permitted per purchase.
  • If a Comfort Exchange is approved, a standard fee of $95 will apply to cover administrative costs of this service. Additional delivery and/or collection fees may also apply.


For full details, learn more at our 30-Night Comfort Exchange page

Mattress Feel
Medium
Ideal for all sleep positions — the most versatile comfort level
Ultra-Firm Firm Medium-Firm Medium Medium-Soft Soft Ultra-Soft
1 2 3 4 5 6 7
Ergonomic Support
5-Zone Pocket Spring
Zoned and individually wrapped springs for greater support
Track Edge System
Provides superior edge support and keeps you sleeping flat without that rolling out feel
Breathability & Comfort
Gel Infused Visco
Combines visco memory foam and Gel to soothe pressure points and assists with heat dispersion
Quilted Polywool Top
Enhances breathability, comfort, and mattress durability.