For most South African buyers, foam is the better choice: better price per rand of quality, no mechanical parts to wear out, motion isolation that does not disturb your partner, and specs you can verify before you buy. Pocket springs suit buyers who strongly prefer traditional bounce feel or need maximum airflow in very hot conditions.
Here is the full comparison, without the showroom spin.
Foam vs spring: the direct comparison
| High-density foam | Pocket springs | |
|---|---|---|
| Lifespan | 7-10 years (at 28+ kg/m³ support core) | 5-8 years before spring fatigue sets in |
| Motion isolation | Excellent, foam absorbs movement | Fair, springs transfer movement to partner |
| Back support | Body-contouring, even pressure distribution | Point-loaded at coil tips |
| Price at equal quality | R2,399, R4,999 direct from manufacturer | R6,000, R15,000+ for comparable quality |
| Verified specs | Density in kg/m³, ask and get a number | Coil count and gauge, harder to compare |
| Airflow | Good in quality foam; very good in Hybrid | Excellent, open structure allows airflow |
| Mechanical wear | None, foam has no moving parts | Springs fatigue and lose tension over time |
| Weight | Lighter, easier to rotate and move | Heavier, harder to handle |
| Noise | Silent | Can creak as springs age |
When foam wins
Couples. No motion transfer means your partner getting up at 3 am does not disturb you. Quality foam absorbs movement completely; springs transmit it across the mattress.
Back and side sleepers. Foam moulds to your body, distributing weight without pressure points. Springs are point-loaded at each coil, which can create pressure on hips and shoulders over time.
Price-conscious buyers. Removing the spring manufacturer, spring component cost, and often the retail layer means high-quality foam costs less. A direct-sold double in high-density foam: R2,399 to R4,999. Comparable quality pocket spring through retail: from R8,000.
Buyers who want verified specs. Foam density in kg/m³ is a single, measurable, comparable number. Ask for it; expect it back. Spring coil count matters but is harder to compare fairly across brands.
When springs win
Very hot sleepers. The open coil structure allows exceptional airflow. Quality foam is good, but open-coil springs still beat foam on raw ventilation in extreme heat conditions.
Traditional bounce preference. Some people simply prefer the responsive, buoyant feel of pocket springs. This is a valid preference, not a quality issue. If you grew up on springs and find foam too "dead", buy springs.
Maximum firmness for stomach sleepers. A very firm pocket spring surface suits some stomach sleepers, though firm high-density foam achieves the same in most cases.
The hidden cost of springs
Spring mattresses pass through more hands before they reach you: spring manufacturer, mattress assembly, distributor, retailer. Each adds margin. None of those steps improve the sleep surface. Buying foam direct removes those layers. That saving goes to you, not to the supply chain.
The hybrid option
Want the body-contouring of foam on top and the airflow and bounce of springs underneath? The Mr Mattress Hybrid delivers both, foam comfort layer on a pocket spring base, with the full 180-night trial and 10-year warranty.
What real customers say
"Spent 20 years on springs, switched to the Active after reading about foam density. I expected to miss the bounce. I don't. The support is better and it sleeps cooler than my old spring bed."
"Partner moves a lot at night. Springs were waking me up constantly. Switched to foam and sleep through everything now."
Rated by 10,000+ sleepers.
Frequently asked questions
Is foam or spring better for back pain?
Foam, in most cases. High-density foam contours to your body, distributes weight evenly, and avoids the pressure points that pocket spring coil tips can create. Medium-firm foam (28+ kg/m³) is the evidence-backed choice for lower back pain.
Does foam sleep hotter than springs?
Cheap closed-cell foam can trap heat. High-quality open-cell foam, like the cores Mr Mattress uses, manages airflow well and sleeps cool for most people. If you run very hot, the Hybrid gives maximum ventilation.
How long does foam last compared to springs?
High-density foam (28+ kg/m³) lasts 7 to 10 years. Pocket springs typically last 5 to 8 years before spring fatigue causes permanent sag. Foam at 28+ kg/m³ usually outlasts springs at an equivalent price point.
Are foam mattresses good for couples?
Excellent. Foam absorbs motion transfer completely, your partner's movement does not disturb you. Springs transmit movement across the bed. For couples where one person moves a lot, foam is the clear choice.
Can you flip a foam mattress?
Most modern foam mattresses are one-sided and not designed to flip. Rotate 180 degrees (head to foot) every few months to even out wear. Check the manufacturer's recommendation.
Is spring or foam better for a heavy person?
High-density foam at 35 kg/m³ or above. Foam density is directly measurable and directly related to load-bearing capacity, easier to verify pre-purchase than individual coil quality in a spring mattress.
Written by Andries Taljaard, founder of Mr Mattress. 15+ years making foam mattresses in South Africa. Last updated: June 2026.