A mattress topper is a separate layer of foam, latex, wool or fibre fill placed on top of an existing mattress to change how it feels without replacing the mattress itself. The best mattress toppers in Australia soften a bed that has gone too firm, add cooling to a mattress that traps heat overnight, or restore some support in a bed that has started to sag through the middle.
Most toppers sold in Australia fall into five material categories: memory foam toppers that contour to the body and are often zoned for extra support under the hips and shoulders, latex toppers that respond faster and sleep cooler than foam, wool underlays that even out temperature across both seasons, feather and down toppers that add a soft hotel-style layer with little structural support, and microfibre or pillowtop toppers that sit at the budget end and mainly add plushness rather than pressure relief.
Thickness is the number worth checking first: most Australian toppers run 5cm to 10cm (2 to 4 inches), and anything under 5cm adds softness but little real pressure relief, while 8cm or more starts to genuinely change how a firm mattress feels. Skirt depth matters almost as much, since a topper built for a 25cm mattress will not stay anchored on the deeper pocket-spring and hybrid beds now common in Australian bedrooms.
This guide compares ten mattress toppers available in Australia across memory foam, latex, wool and fibre fill, selected for current stock availability and spanning budget, mid-range and premium price points.
Quick Picks
Serenity Luxe Mattress Topper
An 8cm dual-layer foam topper built for side and back sleepers who need real pressure relief, not just a softer surface.
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Giselle Bedding 11-Zone Memory Foam Topper
Eleven contoured zones target the hips and shoulders specifically, rather than compressing evenly like a flat foam slab.
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Marshmellow Plush Mattress Topper
A fibre-fill pillowtop for anyone who wants a softer, cheaper surface without paying foam prices.
CHECK CURRENT PRICEBest Mattress Toppers in Australia Compared
| Product | Link | Type | Best For | Key Spec |
|---|---|---|---|---|
| Serenity Luxe Mattress Topper | Check price | Memory foam | Back support | 8cm dual-layer, ArcticFlow cooling top |
| Giselle Bedding 11-Zone Memory Foam Topper | Check price | Memory foam | Pressure relief | 8cm, 11-zone contoured design |
| Original Wave Mattress Topper | Check price | Memory foam | Cooling | 3-layer, 7-10cm, bamboo blend cover |
| Giselle Bedding 1500GSM Pillowtop Bamboo Topper | Check price | Pillowtop | Bamboo cover | 11cm, 1500GSM hollow-fibre fill |
| Straight 2 Sleep Mattress Topper | Check price | Memory foam | Firm support | 7cm, firm top layer |
| Marshmellow Plush Mattress Topper | Check price | Fibre fill | Budget | Up to 10cm, cotton cover |
| Starry Eucalypt Memory Foam Topper | Check price | Memory foam | Cooling gel | 10cm, 7-zone, cool gel, bamboo cover |
| Latex Mattress Topper | Check price | Latex | Natural material | Responsive latex construction |
| Royal Comfort Duck Feather and Down Topper | Check price | Feather and down | Plush comfort | 1800GSM fill, baffle-box construction |
| Mattress Topper 100% Wool Underlay | Check price | Wool | Temperature regulation | 100% wool, reversible |
1. Serenity Luxe Mattress Topper – Best for Back Support
The Serenity Luxe uses an 8cm dual-layer build: a 3cm top layer of cooling memory foam sits over a 5cm high-density support base. The quilted cover is removable and machine washable, and the fitted skirt is deep enough to fit mattresses up to 45cm thick, which covers most modern pocket-spring and hybrid beds.
The support base is firm enough that side and back sleepers do not sink through to the mattress underneath, while the cooling top layer takes the edge off overnight heat that thinner memory foam toppers tend to trap. It is the only topper in this list built specifically around spinal alignment rather than general softness.
It carries the highest price in this roundup, and buyers who just want a cheap softness upgrade will find better value further down this list. Anyone with existing back or hip discomfort, or a mattress that has started to feel too firm rather than too soft, is the target buyer here.
Pros
- 8cm dual-layer foam with a genuine support base, not just a soft top
- Removable, machine-washable cooling cover
- Deep skirt fits mattresses up to 45cm
Cons
- Priced above every other topper in this list
- Overkill for anyone who only wants a light softness top-up
Key specs: 8cm thick (3cm cooling foam plus 5cm support base); fits mattresses up to 45cm; removable washable cover; Single to Super King.
CHECK CURRENT PRICE2. Giselle Bedding 11-Zone Memory Foam Topper – Best for Pressure Relief
This topper is built around an 11-zone contoured design, with the foam cut into different densities across its length rather than one flat block. The cover is a removable, washable bamboo fibre blend, and the Queen size measures 203cm by 153cm at 8cm thick.
The zoning is noticeable under the shoulders and hips specifically, where the foam compresses more than it does under lighter-pressure areas like the calves. That targeted give is the main advantage over a single-density foam topper of the same thickness.
Buyers who sleep on their back or side, where pressure points are more localised, get the most out of the zoning. Stomach sleepers, who spread weight more evenly across the body, will not notice much difference over a standard flat topper.
Pros
- 11-zone design targets hips and shoulders specifically
- Removable, washable bamboo fibre cover
- 8cm thickness suits most mattress types
Cons
- Zoning benefit is mostly wasted on stomach sleepers
- Bamboo cover needs a cool wash to avoid shrinkage
Key specs: 8cm thick, 11-zone contoured memory foam; removable washable bamboo fibre cover; Queen 203cm x 153cm.
CHECK CURRENT PRICE3. Original Wave Mattress Topper – Best Cooling Design
The construction stacks three separate foam layers: a Cloud Comfort layer on top, a Cool Blue Core in the middle, and a firmer Stability Support layer at the base, for a combined depth of 7cm to 10cm depending on where it is measured. A bamboo and polyester blend cover wraps the whole thing, with a 38cm elastic skirt.
The middle cooling layer is doing most of the temperature work here, and it shows in reviews that consistently mention sleeping cooler than on the bare mattress. Two pillows are bundled with every order, which is unusual among direct-to-consumer topper brands.
This is the most heavily reviewed topper in the range, and the volume of feedback is a reasonable proxy for how consistently it performs across different body types and mattress ages. Hot sleepers on an older mattress that has started to trap heat are the clearest fit.
Pros
- Three-layer build with a dedicated cooling middle layer
- Comes bundled with two pillows
- Large review base backing consistent performance
Cons
- 38cm skirt may not suit unusually deep mattresses
- Softer top layer means less structural correction than the Serenity Luxe
Key specs: 7cm to 10cm total depth, three-layer foam construction; bamboo/polyester cover; 38cm skirt; Single to Super King.
CHECK CURRENT PRICE4. Giselle Bedding 1500GSM Pillowtop Bamboo Topper – Best Bamboo Pillowtop
Rather than foam, this topper uses a 1500GSM hollow-fibre fill inside a bamboo-blend cover, at 11cm thick with a 45cm deep pocket. It sits closer to a plush mattress pad than a structural foam layer.
The high fill weight gives a noticeably plusher, hotel-bed feel straight out of the packaging, and the bamboo cover breathes better through summer than a polyester equivalent. It does not correct firmness the way a foam topper does, since fibre fill compresses rather than pushes back.
This suits a mattress that is already the right firmness but feels a little worn or thin on top, rather than a mattress that genuinely needs more support. Anyone expecting foam-level pressure relief should look further up this list instead.
Pros
- 1500GSM fill gives a noticeably plush surface layer
- Bamboo cover breathes well in warmer months
- Deep 45cm pocket suits thicker mattresses
Cons
- Fibre fill compresses over time rather than holding its shape like foam
- Adds little correction to a mattress that is genuinely too firm
Key specs: 11cm thick, 1500GSM hollow-fibre fill; bamboo-blend cover; 45cm deep pocket; Queen.
CHECK CURRENT PRICE5. Straight 2 Sleep Mattress Topper – Best Firm Support
The build here is simpler than the Serenity Luxe: a 4cm firmer memory foam layer sits over a 3cm base, for 7cm total, wrapped in a breathable removable cover with a 38cm skirt.
The top layer is noticeably firmer than most memory foam toppers in this list, closer to a medium-firm mattress feel than the usual slow-sink foam response. Sleepers who found the Original Wave or Marshmellow too soft are the natural upgrade path to this one.
It will not suit anyone chasing a plush, cloud-like feel, since that is specifically what this topper is built to avoid. Combination sleepers who move between their back and side through the night tend to report the most consistent comfort with it.
Pros
- Firmer foam response than most toppers in this range
- Breathable, removable cover
- Suits combination sleepers who change position overnight
Cons
- Not a fit for anyone wanting a soft, plush surface
- Thinner overall than the Serenity Luxe at 7cm total
Key specs: 7cm thick (4cm firm foam top plus 3cm base); removable breathable cover; 38cm skirt; Single to Super King.
CHECK CURRENT PRICE6. Marshmellow Plush Mattress Topper – Best Budget Pick
This is the only non-foam option from this brand, built from a micro-polyester air-plush fibre fill inside a 100% cotton cover, up to 10cm thick with a 30cm elastic skirt. The fill is a GRS-certified recycled material rather than virgin polyester.
Without foam’s structural push-back, it behaves more like a very thick mattress pad than a support layer, adding softness on top of the mattress rather than changing how the mattress itself feels underneath. It is also the lightest topper in this list to handle when rotating or washing the mattress.
The trade-off for the lower price is durability. Fibre fill flattens with regular use faster than foam or latex, so this suits a spare room or guest bed more than a primary mattress someone sleeps on every night for years.
Pros
- Lowest price point in this range
- Lightweight and easy to handle
- Recycled fibre fill
Cons
- Flattens faster than foam or latex with regular use
- Adds softness only, with no real pressure relief
Key specs: Up to 10cm thick; micro-polyester recycled fibre fill; 100% cotton cover; 30cm skirt.
CHECK CURRENT PRICE7. Starry Eucalypt Memory Foam Topper – Best Cooling Gel
This topper pairs a 7-zone memory foam core with cooling gel beads worked through the foam, at 10cm thick under a removable bamboo cover.
The gel infusion targets heat retention, the most common complaint with dense memory foam, and the zoning adds the same targeted support seen on the Giselle Bedding 11-zone topper earlier in this list. At 10cm it is also one of the thicker options here.
Hot sleepers who specifically want memory foam’s support, rather than latex’s more natural cooling, get the clearest benefit. Anyone in a genuinely cold bedroom gets little from the cooling gel and may prefer a plainer foam topper at a lower price.
Pros
- Cooling gel beads worked through a 7-zone foam core
- 10cm thickness, on the deeper end for this list
- Removable bamboo cover
Cons
- Cooling benefit is wasted in genuinely cold bedrooms
- Bulkier and heavier than the thinner toppers in this list
Key specs: 10cm thick, 7-zone memory foam with cooling gel; removable bamboo cover; Queen.
CHECK CURRENT PRICE8. Latex Mattress Topper – Best Natural Latex
Latex is the odd one out among the mostly foam-based lineup here, responding to weight almost instantly rather than the slow sink-and-recover most memory foam is known for.
That faster response makes it noticeably easier to change position during the night without feeling stuck in the mattress, and latex naturally sleeps cooler than standard memory foam without needing a gel infusion to compensate. It is also more durable over years of use than fibre fill or basic foam.
The trade-off is a firmer, more responsive feel that some side sleepers find less contouring than foam under the hips and shoulders. Hot sleepers who dislike the stuck-in-foam sensation get the most out of switching to latex specifically.
Pros
- Responds instantly rather than slowly sinking and recovering
- Sleeps cooler than standard memory foam
- More durable over time than fibre fill
Cons
- Less deep contouring under the hips and shoulders than foam
- Firmer feel will not suit everyone who prefers a plush surface
Key specs: Latex construction; faster response than memory foam; naturally breathable; Queen.
CHECK CURRENT PRICE9. Royal Comfort Duck Feather and Down Topper – Best Feather and Down
This topper swaps foam for an 1800GSM fill of duck feather and down, wrapped in a soft-touch cotton cover with baffle-box stitching to keep the fill evenly distributed rather than clumping in corners.
Feather and down compress under weight rather than pushing back the way foam does, giving a plush, enveloping feel closer to a hotel duvet laid flat than a support surface. The baffle-box construction is doing real work here, since a plain sewn-through design would let the fill migrate within a few months of use.
This suits anyone chasing softness above all else, including guest rooms and sofa beds where support matters less than a quick comfort upgrade. Buyers with feather allergies, or anyone wanting the structural correction of foam or latex, should look elsewhere in this list.
Pros
- 1800GSM duck feather and down fill for a plush, enveloping feel
- Baffle-box construction keeps fill from clumping
- Soft-touch cotton cover
Cons
- No structural support compared with foam or latex options
- Not suitable for anyone with feather or down allergies
Key specs: 1800GSM duck feather and down fill; baffle-box construction; cotton cover; Double.
CHECK CURRENT PRICE10. Mattress Topper 100% Wool Underlay – Best Wool Underlay
Unlike every other topper in this list, this one uses raw wool fibre rather than foam, latex or fibre fill, in a reversible design that can be flipped for even wear over time.
Wool naturally regulates temperature in both directions, insulating in winter and wicking moisture in summer, which is the main reason it turns up in premium mattress ranges despite adding no real pressure relief. The reversible design also means it lasts longer before one side compresses more than the other.
This is a seasonal-comfort purchase rather than a support fix, best suited to anyone who runs hot or cold overnight regardless of mattress firmness. Sleepers dealing with back or hip discomfort need the structural correction of a foam or latex topper instead.
Pros
- Reversible design evens out wear over time
- Wool regulates temperature across both seasons
- Natural fibre rather than synthetic fill
Cons
- Adds no structural pressure relief
- Requires wool-specific care rather than a standard machine wash
Key specs: 100% wool fibre fill; reversible construction; Queen.
CHECK CURRENT PRICEHow to Choose a Mattress Topper
Match the topper to the problem, not just the mattress age. A topper corrects one of three things: firmness, temperature, or surface comfort. Memory foam and latex change firmness and support, wool and feather add surface softness without changing support, and gel-infused or ventilated designs specifically target heat rather than firmness.
Thickness under 5cm mostly changes feel, not support. Toppers at 3cm to 4cm sit closer to a mattress pad, adding a softer surface without correcting a mattress that has genuinely lost firmness. A mattress that needs fixing, rather than just softening, calls for 7cm or more.
Check the skirt depth against the actual mattress, not the topper’s stated size. Pocket-spring and hybrid mattresses commonly run 30cm to 40cm deep once a mattress protector is already fitted, and a topper skirt built for a 25cm mattress will work loose within weeks on a deeper bed.
Zoned foam earns its price difference for side and back sleepers specifically. The zoning targets pressure under the hips and shoulders, which matters most for sleepers who stay in one position most of the night. Stomach sleepers and people who move constantly through the night get less benefit from paying for zoning.
Hot sleepers should prioritise material over marketing terms like cooling. Latex and wool both sleep cooler than standard memory foam by nature, while a cooling gel foam topper is still foam with an added layer working against its own heat retention. Genuinely temperature-sensitive sleepers get a bigger improvement from switching material than from picking a foam topper labelled cooling.
Machine-washable covers matter more than they seem on paper. A topper without a removable cover needs the entire topper aired or spot-cleaned, which is far less practical than pulling a cover off for a normal wash. This becomes a bigger factor with children, pets, or allergy sensitivities in the household.
Frequently Asked Questions
How thick should a mattress topper be?
Most mattress toppers in Australia run 5cm to 10cm (2 to 4 inches) thick. Anything under 5cm adds surface softness with little pressure relief, while 8cm or more genuinely changes how a firm mattress feels underneath.
What is the difference between a mattress topper and a mattress protector?
A mattress topper adds a layer of foam, latex, wool or fibre fill to change comfort and support. A mattress protector is a thin, usually waterproof cover designed to guard the mattress against spills and allergens, with no meaningful effect on feel or firmness.
Do mattress toppers work on an old, sagging mattress?
A topper can mask a mild dip for a year or two, particularly a firmer memory foam or latex option, but it cannot correct a mattress with broken springs or collapsed foam underneath. A mattress with a dip deeper than around 5cm usually needs replacing rather than topping.
Which mattress topper material sleeps the coolest?
Latex and wool both sleep cooler than standard memory foam because they do not trap body heat in the same way. Gel-infused memory foam narrows that gap but does not fully close it.
Can a mattress topper fix a mattress that is too firm?
Yes, a foam or fibre-fill topper of 7cm or more sits between the body and a firm mattress, softening the surface without needing to replace the mattress. A topper under 5cm makes less difference against a genuinely firm base.
How long does a mattress topper typically last?
Memory foam and latex toppers generally hold their shape for three to five years with regular use, while fibre-fill and pillowtop toppers tend to flatten within one to two years. Rotating the topper periodically extends the life of any type.
Verdict
For most Australian bedrooms, the Giselle Bedding 11-Zone Memory Foam Topper offers the clearest balance of pressure relief and price among the options tested here, while the Serenity Luxe Mattress Topper is worth the higher cost for anyone dealing with ongoing back or hip discomfort rather than just general firmness. Anyone testing a topper for the first time on a tight budget can start with the Marshmellow Plush Mattress Topper, which uses recycled fibre fill rather than foam and sits well below every other price point in this list.
