Choosing a mattress from an online mattress retailer isn’t just about what looks fancy online. The firmness level you choose has a big impact on how well you sleep, and more importantly, how your body feels the next day.
But how do you know whether you need firm, medium, or soft support?
It all comes down to how you sleep.
Let’s take a closer look at what your sleep position says about your mattress needs—and how to get it right.
Side Sleepers – Go Softer for Pressure Relief
If you sleep on your side, you’re putting weight on your hips and shoulders all night.
A soft or medium mattress helps by:
- Cushioning your joints
- Reducing pressure on your shoulders
- Allowing your spine to stay straight
Memory foam or hybrid mattresses with soft top layers are often best for side sleepers. They gently contour around your body and give just enough “sink” to stay comfortable.
Avoid: Very firm mattresses—they can push too hard on your joints and leave you sore.
Back Sleepers – Aim for Medium to Firm Support
Back sleepers need balance. You want your spine aligned, but you also want comfort for your lower back.
A medium-firm mattress usually works best. It supports the natural curve of your back without letting your hips sink too low.
Pocket sprung or firmer foam options work well here—especially if they include zoned support around the lower back.
Avoid: Anything too soft. It can throw your alignment off and cause stiffness in the morning.
Front Sleepers – Firmer Is Often Better
Sleeping on your front can put pressure on your neck and lower back. A firm mattress helps keep your spine in a flat, neutral position, so you don’t arch too much overnight.
Latex or firm pocket sprung mattresses are often good for front sleepers—they provide strong support without too much give.
Avoid: Soft mattresses. They let your hips drop and may increase lower-back pain over time.
Combination Sleepers – Go for Versatility
If you move around during the night, you’re a combination sleeper—and you need a mattress that works in all positions.
A medium feel is usually the sweet spot. It cushions well when you’re on your side but still keeps you aligned when you roll onto your back or front.
Hybrid mattresses are a popular choice here, as they blend foam comfort with spring support.
Avoid: Extreme firmness or softness—you want flexibility.
Other Things That Affect Firmness Choice
While your sleep style is key, a few other factors also play a role:
Weight
Heavier sleepers may find soft mattresses too saggy. Firmer options give better long-term support.
Lighter sleepers often find firm mattresses feel too hard—so a softer feel may be more comfortable.
Health issues
- Joint pain? Look for pressure relief (softer top layers).
- Back problems? Prioritise spinal alignment with a medium to firm orthopaedic mattress.
- Circulation issues? Softer surfaces may help reduce numbness or tingling.
Sharing a bed
Different weights or sleep styles? A medium or hybrid mattress can keep both people happy. Some couples even choose split options or add a topper to one side.
How to Tell If You’ve Got It Right
A good mattress:
- Keeps your spine aligned in your usual sleep position
- Eases pressure points
- Helps you fall asleep easily and wake up without aches
Still unsure? Try looking for mattresses with a trial period. That way, you can sleep on it (literally) before deciding
In Summary
Firmness isn’t about what sounds good on paper. It’s about how your body feels through the night—and how it recovers by morning.
By understanding your sleep style, you can choose a mattress that actually supports the way you rest. Whether that’s soft and snug or firm and steady, the right choice makes all the difference.
