Sleep Firm Ultra Mattress – Australia’s Best Firm Feel Mattress in a Box Award

If you’ve been searching for the best firm mattress in Australia, the Sleep Firm Ultra Mattress stands in a league of its own. Recently recognised with Australia’s ‘Best Firm Feel’ Mattress in a Box Award, this mattress is purpose-built for sleepers who demand uncompromising support.

Designed and made in Australia, the Sleep Firm Ultra delivers genuine 10/10 firmness, engineered for spine alignment, stability and long-lasting durability.

Why the Sleep Firm Ultra Won Australia’s ‘Best Firm Feel’ Award

The mattress industry is crowded with brands claiming “firm support”. Very few actually deliver true firmness from edge to edge.

Sleep Firm has a single-minded focus – giving the people firmness  Unlike brands that offer soft, medium and firm options, Sleep Firm specialises exclusively in firm mattresses. They are firm to the core, from the centre to the supportive edge.

The Sleep Firm Ultra Mattress earned its award because it:

• Provides a genuine 10/10 firmness rating

• Maintains consistent support across the entire surface

• Eliminates sagging and sinkage

• Supports healthy spinal alignment

• Offers outstanding motion isolation for couples

For sleepers who are tired of mattresses that feel firm for the first few months and then soften, the Ultra delivers lasting structure and resilience.

You can explore the full range at Sleep Firm

The Sleep Firm mattress range has been engineered with high density foam comfort layers and high coil count pocket springs to produce an incomparable sleeping experience  It is recognised as Australia’s firmest mattress in a box, built for true support and lasting comfort. 

Despite its ultra firm construction, delivery is simple:

• Convenient box delivery

• Easy set-up

• Suitable for most bed bases

• 150-night free trial

The 150-night free trial gives you complete confidence in your purchase. You can experience the difference in your own home, risk-free.

Frequently Asked Questions

Is the Sleep Firm Ultra Mattress really 10/10 firm?

Yes. The Sleep Firm Ultra Mattress has a true 10/10 firmness rating and is specifically designed for sleepers who want maximum support with minimal sinkage

Who is the Sleep Firm Ultra best suited for?

It is best suited to back and stomach sleepers, heavier individuals, and anyone who experiences discomfort on softer mattresses.

Does the Sleep Firm Ultra Mattress come with a trial?

Yes. It includes a 150-night free trial, allowing you to test the mattress in your own home with confidence.

Is the Sleep Firm Ultra made in Australia?

Yes. The mattress is proudly Australian made, built for lasting strength and durability