How to Choose the Right Mattress: Complete Guide for Australians

Buying a mattress is one of the more significant household purchases you'll make — you'll spend roughly a third of your life on it, and the right choice has a real impact on your sleep quality, energy levels, and physical health. Yet most people spend less time researching a mattress than they do choosing a new phone.

This complete guide walks through every consideration that matters when choosing a mattress in Australia — sleeping position, body type, material type, firmness, cooling, brand considerations, and how to actually use the trial period effectively.

Step 1: Know Your Sleeping Position

Your primary sleeping position is the most important factor in determining the right mattress type and firmness. Most people have a dominant sleeping position, even if they move during the night.

Side Sleepers

The most common position. Side sleepers need a mattress that allows the hip and shoulder to sink in slightly to relieve pressure, while supporting the rest of the body. Medium to medium-soft mattresses suit most side sleepers. Memory foam and quality hybrids work best.

Back Sleepers

Back sleepers need lumbar support — the mattress should fill the natural curve of the lower back without either sagging or pushing the back into an unnatural arch. Medium to medium-firm mattresses suit most back sleepers.

Stomach Sleepers

The most challenging position for spinal health. A firm mattress is generally recommended for stomach sleepers to prevent the hips from sinking below the chest, which would strain the lower back.

Combination Sleepers

If you move between positions during the night, a responsive mattress that makes it easy to shift positions is beneficial. Hybrids and some foams are better for combination sleepers than very dense memory foam that you can 'sink into'.

Step 2: Consider Your Body Weight

• Under 65kg: mattresses feel firmer than rated — consider going softer than the stated firmness suggests

• 65–100kg: standard firmness ratings apply broadly

• Over 100kg: mattresses feel softer than rated — consider going firmer, and prioritise higher-density foam and strong coil systems

Step 3: Choose a Material Type

Memory Foam

Best for: pressure relief, motion isolation, side sleepers, couples. Drawback: can sleep hot. Look for open-cell or gel-infused foam if you're a hot sleeper.

Hybrid (Foam + Pocket Springs)

Best for: cooling, bounce, couples with different preferences, general all-round use. Drawback: more expensive, heavier to move.

Latex

Best for: natural materials, durability, cooling, pressure relief. Drawback: expensive, less widely available in Australia.

Traditional Innerspring

Best for: budget options, traditional feel, cooling. Drawback: motion transfer, pressure points, shorter lifespan at budget price points.

Step 4: Determine Your Firmness

Use the sleeping position and body weight guidelines above as a starting point. If you're unsure, medium (5–6 on a scale of 1–10) is the safest choice for most people. Consider brands with adjustable firmness (Ecosa, Sleeping Duck) if you want flexibility.

Step 5: Think About Temperature

Australian summers are hot. If you sleep warm or live in QLD, WA, or northern NSW, prioritise cooling features: hybrid construction, open-cell foam, gel infusions, and breathable cover materials. Pair any mattress with breathable linen or bamboo sheets.

Step 6: Consider Your Budget

For a primary bedroom mattress, the $900–$1,500 range from a reputable online brand offers the best quality-to-price ratio in Australia. Don't go below $400 for a primary mattress if you can avoid it. Guest rooms can use $400–$800 options.

Step 7: Check Trial Period and Warranty

• Trial period: minimum 100 nights; prefer 120

• Warranty: minimum 10 years; 15 is excellent

• Return policy: free collection is standard for most reputable brands; check the terms

Step 8: Use the Trial Period Properly

Don't judge your new mattress in the first two weeks. Your body needs time to adjust to a new sleep surface, especially if your old mattress was very different. Give it at least 3–4 weeks before forming a firm opinion. Keep the original packaging for returns just in case, and note any physical symptoms like back pain or shoulder discomfort that might indicate a firmness mismatch.

Red Flags to Avoid

• No stated trial period or very short trial (under 30 days)

• Warranty with lots of exclusions — particularly vague 'normal wear and tear' exclusions

• Mattresses without material certifications (CertiPUR-US, OEKO-TEX)

• Brands that won't collect returned mattresses for free within the trial period

Our Recommended Process

Identify your sleeping position and body weight. Use these to narrow down appropriate firmness and material type. Set a budget. Shortlist 2–3 brands that meet your criteria. Check current pricing and promotions. Order from the brand with the longest trial period among your shortlist. Give it a proper 4-week trial before deciding.

Our Top Picks

Quick Comparison Table

Buying Guide: What to Look for in an Australian Mattress

1. Trial Period

Always look for at least 100 nights. Koala (120 nights) and Sleeping Duck (100 nights) offer some of the best trials available. A trial lets you test the mattress through different seasons including Australian summer.

2. Warranty

A 10-year warranty is standard for quality mattresses. Ecosa offers 15 years, which is exceptional. Be wary of brands offering less than 5 years.

3. Foam vs Hybrid

All-foam mattresses offer excellent motion isolation but can sleep warm. Hybrid mattresses use pocket springs under foam, improving airflow significantly — important for Australian summers.

4. Firmness

Medium is most versatile for side and back sleepers. Stomach sleepers generally need firmer. If unsure, Ecosa lets you adjust firmness.