Shortlist · Sleep · 6 models
Best mattress toppers for a double bed: foam and fibre from 2.5 to 10 cm, by what each one can fix
A topper is sold as one product and does three jobs: a fibre pad freshens a surface, a deep fibre topper softens a hard bed, and a two-layer foam topper changes how a tired mattress supports you. Buy the wrong kind and you get a hot, sagging or pointless layer. Six toppers for a UK double (135 by 190 cm) from Silentnight and three foam makers, compared on depth, fill, fixing and washing.
Quick answer
- 8cmA firm or worn mattressDegrees of Comfort 8 cm: 3 cm of gel memory foam over 5 cm of support foam, zip-off washable cover, straps and a non-slip base.
- 7cmA side sleeper who wants the sinkUspark 7 cm: 5 cm of memory foam over 2 cm of support foam, bamboo-blend zip cover, full-length bands.
- 10cmA plush hotel topSilentnight Airmax 10 cm: dual-layer hollowfibre, mesh sides, box-stitched, machine washable, two-year guarantee.
- 5cmSoftening a firm bed, washableSilentnight Airmax 5 cm: the same fibre topper at half the depth and weight.
- 3cmA washable layer with a little giveEHEYCIGA 3 cm: a quilted pad with a thin gel-foam layer and a fitted skirt.
- 2.5cmA padded protectorSilentnight Deep Sleep: 2.5 cm of hollowfibre in a quilted polycotton cover with straps.
The six at a glance
| Model | Depth | Fill | Fixing | Washing | Where to buy |
|---|---|---|---|---|---|
| Degrees of Comfort 8 cm Dual-Layer Topper (double)for a firm or worn mattress, two layers of foam | 8 cm† | 3 cm gel memory foam + 5 cm support foam† | Four corner straps and non-slip base† | Cover machine washable† | View listing |
| Uspark 7 cm Gel Memory Foam Topper (double)for a side sleeper who wants the memory-foam sink | 7 cm† | 5 cm gel memory foam + 2 cm support foam† | Full-length elastic bands and non-slip base† | Cover machine washable† | View listing |
| Silentnight Airmax Topper 10 cm (double)for a plush hotel-style top | 10 cm† | Hollowfibre, dual layer | Elasticated corner straps | Machine washable | View listing |
| Silentnight Airmax Topper 5 cm (double)for softening a firm bed, washable | 5 cm† | Hollowfibre | Elasticated corner straps | Machine washable | View listing |
| EHEYCIGA 3 cm Gel Memory Foam Topper (double)for a washable layer with a little give | 3 cm† | Gel-infused memory foam with fibre fill, quilted† | Fitted-sheet skirt (deep pocket)† | Machine washable† | View listing |
| Silentnight Deep Sleep Topper (double)for a padded protector, not a topper | 2.5 cm† | Hypoallergenic hollowfibre† | Elasticated corner straps† | Machine washable† | View listing |
Scroll sideways to see every column
† Figure from a retailer listing or otherwise awaiting confirmation from the manufacturer; other figures come from manufacturer manuals and leaflets.
Depth is the figure on each listing, marked pending where the maker’s own page does not state it or states it differently; Silentnight’s Airmax page describes the fibre and the construction but does not fix a single depth. Fill and fixing for the Silentnight models are from Silentnight’s page. The three foam toppers have no manufacturer pages, so their facts carry the listing as source.
Three problems, three kinds of topper
A mattress that has gone soft in the middle has lost support. Nothing you lay on top will give it back, but a two-layer foam topper, a firm base layer under a memory-foam comfort layer, bridges the dip and spreads your weight, and buys a year or two. A mattress that is sound but too hard has the opposite problem: it holds you up and digs into hips and shoulders. That wants a soft layer, which is fibre or a few centimetres of memory foam. And a mattress that is fine but tired on the surface, or a child’s bed, wants a washable pad, which is what the thin quilted products are.
The fourth problem, heat, cuts across the other three. Memory foam holds warmth; gel infusions and mesh side panels help at the margins but do not make foam sleep like fibre. If you already overheat, choose fibre, or the thinnest foam that solves the problem.
Degrees of Comfort 8 cm, for a firm or worn mattress
for a firm or worn mattress, two layers of foam
Degrees of Comfort 8 cm Dual-Layer Topper (double)
- Depth
- 8 cm†
- Fill
- 3 cm gel memory foam + 5 cm support foam†
- Fixing
- Four corner straps and non-slip base†
- Washing
- Cover machine washable†
Check price on Amazon
The one topper here built like a small mattress: 3 centimetres of gel-infused memory foam over 5 centimetres of firmer support foam, inside a knitted cover that unzips along three sides and goes in the washing machine, with mesh side panels for airflow, four corner straps and a non-slip dotted base. The listing rates it medium.
It is foam, so it needs 48 to 72 hours to expand and air, and it sleeps warmer than the fibre toppers. There is no maker website, so every figure is the listing’s.
For a mattress that has gone firm or developed a dip, it is the one that will change how the bed supports you.
Strengths
- 8 cm with a support layer, enough to change a firm or tired bed
- Removable washable cover, straps and a grippy base
Limitations
- Needs 48 to 72 hours to expand and air
- No maker page; listing facts only
Good for
- a firm or worn mattress that needs real softening
- side sleepers with sore hips
Look elsewhere if
- someone who sleeps hot and dislikes foam
Uspark 7 cm, for a side sleeper who wants the sink
for a side sleeper who wants the memory-foam sink
Uspark 7 cm Gel Memory Foam Topper (double)
- Depth
- 7 cm†
- Fill
- 5 cm gel memory foam + 2 cm support foam†
- Fixing
- Full-length elastic bands and non-slip base†
- Washing
- Cover machine washable†
Check price on Amazon
The deepest comfort layer in the group: 5 centimetres of gel-infused memory foam, with 2 centimetres of bamboo-charcoal support foam under it, a bamboo-fibre and polyester zip cover, full-length elastic bands rather than corner straps, and a non-slip base. It weighs 6.8 kilograms by the listing, which tells you how much foam is in it.
Memory foam this deep is the warmest option here, and the slow sink is a taste. No maker page; listing facts only.
For a side sleeper on a hard bed, who wants hips and shoulders to disappear into the surface, it is the one.
Strengths
- 5 cm of memory foam, the deepest comfort layer in this group
- Zip-off washable cover and full-length bands
Limitations
- Memory foam sleeps warmer than fibre
- No maker page; listing facts only
Good for
- a hard mattress and a side sleeper
- someone who likes the slow sink of memory foam
Look elsewhere if
- a hot sleeper
Silentnight Airmax 10 cm, for a plush hotel top
for a plush hotel-style top
Silentnight Airmax Topper 10 cm (double)
- Depth
- 10 cm†
- Fill
- Hollowfibre, dual layer
- Fixing
- Elasticated corner straps
- Washing
- Machine washable
Check price on Amazon
Silentnight’s deep fibre topper: a dual-layer hollowfibre fill in a box-stitched microfibre cover with air-mesh sides, elasticated straps and a two-year guarantee, fully machine washable. Silentnight’s page confirms the construction; the 10-centimetre depth is the listing’s.
Ten centimetres of fibre compresses where you lie, over months, in a way foam does not, and it needs deep fitted sheets from the first night.
For someone who wants the hotel feel, a visibly deep soft top on a firm bed, with the whole thing washable, it is the fibre choice.
Strengths
- Deep fibre layer for a plush feel
- Machine washable and strapped like the 5 cm
- Two-year guarantee
Limitations
- 10 cm of fibre compresses more over time than foam
- Needs deep fitted sheets
- Depth is the listing's figure
Good for
- someone who wants a hotel-style plush top
- a very firm mattress
Look elsewhere if
- back-pain support, which is a foam job
Silentnight Airmax 5 cm, for softening a firm bed
for softening a firm bed, washable
Silentnight Airmax Topper 5 cm (double)
- Depth
- 5 cm†
- Fill
- Hollowfibre
- Fixing
- Elasticated corner straps
- Washing
- Machine washable
Check price on Amazon
The same topper at half the depth: hollowfibre, box-stitched microfibre cover, mesh sides, straps, machine washable, two-year guarantee, 1.5 kilograms. It softens a firm mattress without raising the bed enough to fight the sheets.
It will not do anything for a sagging mattress, and fibre flattens over time.
For a firm new mattress that needs taking the edge off, or a guest bed, it is the cheapest sensible topper here.
Strengths
- Machine washable, the whole topper
- Mesh sides for airflow on a hot sleeper's bed
- Two-year guarantee from a UK maker
Limitations
- Fibre flattens over time where you lie
- Depth figure is from the listing; Silentnight's pages vary
Good for
- a firm mattress that needs softening
- a guest bed
Look elsewhere if
- a sagging mattress, which needs foam
EHEYCIGA 3 cm, for a washable layer with a little give
for a washable layer with a little give
EHEYCIGA 3 cm Gel Memory Foam Topper (double)
- Depth
- 3 cm†
- Fill
- Gel-infused memory foam with fibre fill, quilted†
- Fixing
- Fitted-sheet skirt (deep pocket)†
- Washing
- Machine washable†
Check price on Amazon
A quilted mattress pad with a thin layer of gel-infused memory foam and fibre fill, a bamboo-viscose top, a deep elastic skirt that fits like a sheet, and a whole-item machine wash. OEKO-TEX certified by the listing.
Three centimetres is not enough to change a firm bed, let alone a tired one, and there is no maker page.
For a slightly softer, washable surface on a mattress that is basically fine, it is the step up from a protector.
Strengths
- Fitted skirt stops it sliding
- Whole thing goes in the washing machine
Limitations
- 3 cm is too thin to change a firm bed
- No manufacturer specification page; listing facts only
Good for
- a slightly softer surface and a washable layer
Look elsewhere if
- a sagging mattress or back pain
Silentnight Deep Sleep, for a padded protector
for a padded protector, not a topper
Silentnight Deep Sleep Topper (double)
- Depth
- 2.5 cm†
- Fill
- Hypoallergenic hollowfibre†
- Fixing
- Elasticated corner straps†
- Washing
- Machine washable†
Check price on Amazon
Two and a half centimetres of hypoallergenic hollowfibre in a quilted polycotton cover with elasticated corner straps, machine washable, 1.2 kilograms, two-year guarantee by the listing. Silentnight’s page for this exact part was not found, so the facts are the listing’s.
It is a pad. It will not soften, support or lift anything.
For a child’s bed, a protector that is nicer than plastic, or a fresh surface on a good mattress, it is cheap and washable.
Strengths
- Cheap, light and washable
- Straps hold it like a fitted protector
Limitations
- 2.5 cm will not soften or support anything
- All figures from the listing
Good for
- a mattress protector with a little padding
- a child's bed
Look elsewhere if
- anyone shopping for comfort or support
How to choose
- Name the problem. Sagging or too firm with pressure points: foam, two layers (Degrees of Comfort, Uspark). Firm but sound: fibre (Airmax 5 or 10). Fine, wants freshening: a pad (EHEYCIGA, Deep Sleep).
- Heat. Hot sleepers: fibre. Foam only as thin as the problem allows.
- Depth and sheets. Over 5 centimetres needs deep fitted sheets.
- Washing. Whole-topper wash: the Silentnight fibre toppers and the EHEYCIGA pad. Cover only: the foam toppers.
- Fixing. Full-length bands or a skirt hold better than corner straps on a slippery mattress.
Who should buy a new mattress instead
If the dip in the middle is deep enough to roll into, or the mattress is over eight years old, a topper is a plaster. An 8-centimetre foam topper costs a third of a budget mattress and buys a year; spend the money on the mattress if you can.
Which one, by situation
- Dip in the middle, cannot replace yet: Degrees of Comfort 8 cm.
- Hard bed, side sleeper: Uspark 7 cm.
- Hard bed, hot sleeper: Silentnight Airmax 5 cm.
- Wants plush, washable: Silentnight Airmax 10 cm.
- Fine bed, washable layer: EHEYCIGA 3 cm.
- Child’s bed or protector: Silentnight Deep Sleep.
Sources
Facts checked 23 October 2026
- Amazon listing (Degrees of Comfort) — Retailer listing, checked 23 October 2026
- Amazon listing (UsparkMC) — Retailer listing, checked 23 October 2026
- Amazon listing (Silentnight) — Retailer listing, checked 23 October 2026
- Silentnight — Airmax mattress topper product page — Manufacturer documentation, checked 23 October 2026
- Amazon listing (Silentnight) — Retailer listing, checked 23 October 2026
- Silentnight — Airmax mattress topper product page — Manufacturer documentation, checked 23 October 2026
- Amazon listing (EHEYCIGA) — Retailer listing, checked 23 October 2026
- Amazon listing (Silentnight) — Retailer listing, checked 23 October 2026
Foam or fibre?
Foam changes support: it fills the dip in a tired mattress and takes pressure off hips and shoulders, and it sleeps warmer. Fibre changes feel: it adds softness on top of a bed that is firm but sound, washes in the machine and flattens over a year or two. A sagging mattress needs foam, and really needs replacing; a hard new mattress wants fibre or thin foam.
How deep should a topper be?
Two and a half centimetres is a padded protector. Three to five softens a firm bed. Seven or eight centimetres of foam, with a firmer base layer, is the minimum that changes support. Ten centimetres of fibre is plush but compresses; and anything over five needs deep fitted sheets.
Will a double topper fit my bed?
A UK double is 135 by 190 centimetres and every topper here is sold in that size. Silentnight's own pages quote 137 centimetres in places; the straps cover the difference. A European double is 140 by 200 and needs the king or EU size instead.
Why do foam toppers need 48 hours?
They ship vacuum-rolled. The maker's figure for depth is after the foam has expanded, which takes one to three days, and the smell of new foam needs the same time to air. Open it in a spare room if you can.
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