Opal Medium King Mattress

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