Best Extra Soft Mattress Topper: Loft and Fill Depth

The best extra soft mattress topper for back sleepers is the SHOUREN 5 Inch Memory Foam Mattress Topper, because 5 inches of gel and shredded foam is the deepest published loft in this set and it anchors with straps on all four corners. If you'd rather add softness without burying your mattress, the Niagara Sleep Solution King topper measures just 2.95 inches and comes in a King.

Loft is the specification that splits this field, and it splits it hard. One pick here is 2.95 inches. Another is 5. That is not a small difference in feel, and it is the single number that decides whether you wake up cradled or wake up sunk.

Best extra soft mattress topper for back sleepers at a glance

How I screened this category down to seven

I started from the listing data alone: published loft, published fill weight, cover material, mattress depth range, size and colour. No claim made it into a pick's case unless a number or a manufacturer's sentence backed it.

Three things got listings cut. Toppers with no stated depth range, since a plush pad that won't grip a 14-inch mattress is useless. Toppers with no fill or cover description at all, because "luxury comfort" tells you nothing. And duplicate listings of the same product under different size headers.

What survived splits into three clear tiers by published loft:

1. Deep foam, 5 inches. SHOUREN and WhatsBedding. Both pair shredded memory foam with a quilted surface.
2. Slim foam, 3 inches. NightHug, with 1700 GSM of shredded fill under a bamboo viscose cover.
3. Pillow top, fibre-filled. Niagara at 2.95 inches, plus BEDLORE, D & G and COONP, which publish packed carton figures rather than a sleeping loft.

That last group is worth flagging. Several of these dimension fields describe the compressed box, not the topper in use. An 18-inch or 22-inch figure is a shipping measurement. I've noted where that applies rather than pretending it's a loft number.

Set composition tells you something too. Five of seven are Queen. Two are King. If you sleep on a Full or a Twin, this particular shortlist has nothing for you.

Does an extra soft topper actually suit back sleepers?

Here's the honest answer. None of these seven listings publishes a firmness rating, an ILD figure, or a supported-position test. Several mention back pain relief in their titles or bullets, but that is marketing copy, not a measurement. So no pick in this guide can be promised to suit back sleepers specifically, and I'm not going to invent a number to make one look like it does.

What you can reason about is loft. A back sleeper's spine wants a fairly flat surface with give at the lumbar curve. Too much plush and the hips drop lower than the shoulders. That's the failure mode, and it's why the best extra soft mattress topper for back sleepers is rarely the thickest one on the page.

So treat the softness as the constraint, and judge these by depth:

• On a very firm mattress, 5 inches of shredded foam gives you room to sink without hitting the slab underneath.
• On a mattress that's already medium or soft, 2.95 to 3 inches is plenty, and the deep options risk over-cushioning.
• On a sagging mattress, no topper here fixes it. A plush layer follows the dip.

D & G's listing does claim its pillow top adds cushioning "across the shoulders, back, and hips for side, back, and stomach sleepers." That is the closest any pick comes to addressing the position, and it's a claim, not evidence.

1. SHOUREN 5 Inch Memory Foam Mattress Topper Queen — Best overall

Five inches of published loft, gel foam layered over shredded foam, and straps on all four corners make this the most complete plush upgrade in the set.

Best for: someone on a firm mattress who wants deep cushioning that stays put Skip it if: your bed frame already sits high

SHOUREN publishes 60 x 5 x 80 in, which makes this and the WhatsBedding pick the only two in the set at a full 5 inches. That is the differentiator. Where most plush toppers here rely on fibre fill, SHOUREN describes a combination: gel memory foam over supportive shredded foam. The layered approach is what separates it from a pillow-top pad that compresses flat in a month.

The anchoring is the second reason it leads. SHOUREN says the topper uses four-way elastic anchor straps on all four corners, so it stays positioned through movement. Only D & G makes a comparable corner-strap claim; the rest use an elasticated skirt instead, which works differently and depends on your mattress depth.

The cover is dot-quilted, which SHOUREN says keeps the filling evenly spread. That matters more with shredded fill than with a solid foam slab, since shredded foam is the one that migrates and bunches.

The trade-off is real. This is the most expensive pick here, only one seller lists it, and 5 inches on top of a modern 12-inch mattress means climbing into bed rather than sitting down onto it. Your fitted sheets may not cope either.

Pros:

• Deepest published loft in the set at 5 in
• Layered gel foam over shredded foam, not fibre fill
• Four corner anchor straps, not just an elastic skirt
• Dot-quilted cover to limit fill migration
• Clear 60 x 80 in Queen footprint

Cons:

• The most expensive pick here
• Only one seller lists it
• 5 in raises total bed height significantly
• Needs 24 to 48 hours to expand after unboxing
• No published warranty

2. Niagara Sleep Solution King Ultra Soft Mattress Topper — Runner-up

At 2.95 inches it's the slimmest published loft here, which is exactly why it's the safer pick if you don't want to lose the feel of your mattress.

Best for: a King bed and a shopper who wants softness without losing mattress feel Skip it if: you need thick foam cushioning

This is the one buyers choose most often here by a wide margin, and it's the second-cheapest of the seven. The published 2.95-inch depth is the headline. Where SHOUREN and WhatsBedding both hit 5 inches, Niagara adds under three, which keeps your spine closer to the mattress's own support surface.

Niagara says the cover is rayon derived from bamboo fibre and that the topper fits mattresses 8 to 20 inches deep. That range is the widest stated depth window among the fibre-filled picks, and the listing calls out extra-length stretchy sides for thick mattresses. It's also one of only two Kings in this shortlist.

Machine washability is claimed here, which puts it in a small group. Niagara, D & G, BEDLORE and COONP all state machine-washable; NightHug specifies spot cleaning only. If you have kids or pets on the bed, that single line narrows your options fast.

The catch is that "ultra soft" is doing a lot of work in the name. There's no fill weight published, so you can't compare its density against NightHug's 1700 GSM or WhatsBedding's 2000 GSM. And the green colourway is a commitment if your bedding is neutral.

Pros:

• Slimmest published loft at 2.95 in
• The one buyers choose most often here
• Fits 8 to 20 in mattress depths
• Machine washable per the listing
• Second-cheapest of the seven

Cons:

• No published fill weight to compare
• Green colour limits bedding choices
• Only 2.95 in, so limited relief on a very firm bed
• King only in this listing

3. BEDLORE Queen Mattress Topper — Best budget pick

The cheapest of the seven, and the only pick with three sellers listing it alongside a stated bamboo viscose blend ratio.

Best for: spending the least while still getting a pillow-top layer Skip it if: you want a white topper under white sheets

BEDLORE is the cheapest of the seven and it sells briskly, second only to Niagara in this set. What earns it the budget slot is not just the price position. It's the only pick that publishes an actual blend ratio: 40% bamboo viscose and 60% polyester. Every other bamboo-referencing listing here says "derived from" or "premium viscose" without a percentage.

The published 18 x 80 x 60 in figure is a packed carton measurement, not a sleeping loft, so you cannot compare it against Niagara's 2.95 inches. That's a gap in the listing, not a specification.

BEDLORE describes a deep pocket with an elasticated bed skirt for a secure fit, and machine washability. Three sellers stock it, the most of any pick here, which usually means you have options if one runs out of your size.

The colour is Dark Gray, and that's a genuine constraint. A dark topper under a white fitted sheet shows through, especially on a thin percale. If your bedding is light, this pick fights it. The other trade-off is transparency: no loft, no fill weight, and a description that leans on words like "premium" and "luxurious" rather than figures.

Pros:

• Cheapest of the seven
• Only pick publishing an exact blend ratio, 40/60
• Three sellers stock it, the most here
• Elasticated deep-pocket skirt claim
• Machine washable per the listing

Cons:

• No sleeping loft published
• Dark Gray shows through pale sheets
• No fill weight figure for comparison
• No stated mattress depth range

4. D & G THE DUCK AND GOOSE CO 1400 GSM King Mattress Topper — Best premium

A stated 1400 GSM of fill and a 6 to 22 inch depth range give it the widest mattress compatibility window in the set.

Best for: a King bed on a mattress as shallow as 6 inches Skip it if: you want the cheapest route to a plush layer

D & G is the most expensive pick here and the second of only two Kings. It publishes 1400 GSM of fill, which puts a number on the plushness where four of the seven publish nothing. That's a real advantage when you're comparing pillow tops blind.

The standout figure is the depth range: 6 to 22 inches. Niagara covers 8 to 20, WhatsBedding, COONP and NightHug all quote 8 to 21. D & G is the only one that reaches down to a 6-inch mattress, which matters for guest beds, trundles and older thinner mattresses that an 8-inch minimum skirt will slip off.

Construction is box-quilted with four elastic corner straps, so it uses the same anchoring approach as SHOUREN rather than a fitted skirt. D & G says brushed polyester and breathable fill promote airflow, and the listing claims cushioning across shoulders, back and hips.

Two honest weaknesses. The 22 x 80 x 76 in figure is the shipping carton, so you don't get a sleeping loft, and 1400 GSM is the lowest published fill weight of the three picks that state one. NightHug quotes 1700 and WhatsBedding 2000. Paying the most for the least fill weight is a trade-off worth naming, and it's the slowest seller of the seven.

Pros:

• Widest depth range here, 6 to 22 in
• Publishes 1400 GSM fill weight
• Four elastic corner straps plus box quilting
• Machine washable and tumble dry low
• One of only two King options

Cons:

• The most expensive pick in the set
• Lowest published fill weight of the three that state one
• Slowest seller of the seven
• No sleeping loft published, only carton size
• Only one seller lists it

5. COONP Queen Mattress Topper — Best for small spaces

The only pick describing a cotton top surface, which changes how the topper feels against skin compared with the bamboo and polyester covers here.

Best for: a cotton-surface topper on a Queen in a compact bedroom Skip it if: you need published loft before you buy

COONP sits roughly mid-range for this set on price and holds the middle ground on popularity too. Its distinguishing feature is the cover: cotton, per the product title. Every other pick here uses bamboo viscose, rayon from bamboo, or brushed polyester. If you find viscose covers slick or clammy, cotton is a different proposition entirely.

The listing quotes an 8 to 21 inch elastic deep pocket that works like a fitted sheet, and COONP says the surface ventilates and wicks sweat. Machine washability is stated, and the listing makes a fair point that a fibre-filled pad can go in the wash where a solid foam slab cannot. Three sellers stock it.

Why it earns the small-spaces label: it ships vacuum-compressed and COONP's own instructions are shake, pat, then let it recover. A compressed carton is easier to carry up narrow stairs and into a tight bedroom than a boxed foam slab, and there's no five-inch layer eating headroom under a low ceiling or a bunk.

The listing's dimension field reads 1 x 1 x 1 in, which is placeholder data rather than a measurement. So you get no loft figure and no fill weight. You're buying on the cotton cover and the depth range, and that's thinner evidence than SHOUREN or NightHug give you.

Pros:

• Only cotton top surface in this set
• Fits 8 to 21 in mattress depths
• Machine washable per the listing
• Three sellers stock it
• Compressed packaging is easy to carry

Cons:

• Dimension data is a placeholder, no real loft figure
• No published fill weight
• Needs shaking and recovery time out of the box
• No stated warranty

6. NightHug Queen Mattress Topper — Best for heavy use

The only pick in the set with a named textile certification, paired with 1700 GSM of shredded foam in a slim 3-inch profile.

Best for: a certified cover and a slim 3-inch shredded foam layer Skip it if: you machine-wash your bedding often

NightHug is the only pick here that names a certification. The listing cites OEKO-TEX Standard 100 for its fabric, describing it as non-toxic and suitable for adults and kids. Niagara says its topper has no latex or formaldehyde, but that's a claim without a scheme attached. NightHug's is at least checkable.

The specifications are unusually complete for this category. Published depth is 3 x 80 x 60 in, and NightHug states 1700 GSM of shredded memory foam fill. That combination is what makes it interesting: real foam, but at 3 inches rather than 5. You get shredded-foam cushioning without the height penalty that comes with the SHOUREN pick.

NightHug describes a viscose-from-bamboo cover over an open-cell foam air layer for airflow, and an integrated stretchy pocket fitting 8 to 21 inch mattresses. The Light Green colour is a mild constraint, though less obvious under sheets than BEDLORE's dark gray.

The significant catch is care. NightHug specifies quick spot cleaning only for daily care, which is the opposite of what the four machine-washable picks offer. On a bed that sees spills, that's a genuine problem. It's also the second-most expensive here and among the slowest sellers of the seven.

Pros:

• Only pick citing OEKO-TEX Standard 100
• Publishes both 3 in loft and 1700 GSM fill
• Shredded foam without the 5 in height
• Fits 8 to 21 in mattress depths
• Bamboo viscose cover over open-cell air layer

Cons:

• Spot cleaning only, not machine washable
• Second-most expensive pick here
• Among the slowest sellers of the seven
• Needs 24 to 48 hours to expand
• No published warranty

7. WhatsBedding 5 Inch Memory Foam Mattress Topper — Best for beginners

The highest published fill weight in the set at 2000 GSM, sitting under a 5-inch profile at an entry price position.

Best for: a first plush topper with the highest published fill weight Skip it if: you want a topper that sells briskly and is easy to research

WhatsBedding matches SHOUREN at 5 inches of published loft, and it publishes 2000 GSM of shredded memory foam fill. That is the highest fill weight figure of the three picks that state one, ahead of NightHug's 1700 and D & G's 1400. Getting both figures at an entry price position is why this lands as the beginner pick: it's the cheapest way into deep shredded foam here.

The listing describes a down-alternative lining above the shredded fill and a circle-quilted cover to keep the filling evenly distributed. WhatsBedding also makes a specific argument for shredded over block foam: faster rebound and better breathability than a solid slab. That's the manufacturer's claim, but it's the right axis to think about with a 5-inch layer.

Elastic deep pockets fit 8 to 21 inch mattresses, and WhatsBedding notes the topper looks thin out of the vacuum pack before it recovers.

Two honest problems. The listing's count field reads 0, which is a data error you should confirm on the page before ordering. And this is the second-slowest seller in the set, well behind Niagara and BEDLORE, so there's less shopper history to lean on. Compared with SHOUREN at the same 5 inches, you also lose the corner anchor straps.

Pros:

• Highest published fill weight here at 2000 GSM
• Full 5 in published loft
• Cheapest route into deep shredded foam
• Circle quilting to prevent bunching
• Fits 8 to 21 in mattress depths

Cons:

• Listing count field reads 0, a data error
• Second-slowest seller of the seven
• No corner anchor straps, only an elastic pocket
• 5 in raises bed height noticeably
• Only one seller lists it

Loft depth: how much plush is too much?

This is the question the category refuses to answer clearly, so here's the framework I'd use.

Published loft in this set runs from 2.95 inches to 5 inches, and that spread changes the entire feel of your bed. A 5-inch layer sits between you and your mattress's support core. A 3-inch layer lets the mattress still do most of the work.

Some thresholds worth holding onto:

• Under 3 inches adds surface softness. Your mattress's firmness still dominates.
• 3 to 4 inches is where shredded foam starts genuinely relieving pressure points without swallowing you.
• 5 inches is a rebuild, not a tweak. Best on a mattress you find punishingly hard.

The trap is assuming more inches means more comfort. If your mattress is already medium-firm, 5 inches can leave your midsection lower than your shoulders, which is the opposite of what a flat-backed sleeper wants.

There's a practical ceiling too. Add 5 inches to a 12-inch mattress and you have a 17-inch stack. Standard fitted sheets top out around 15 inches of pocket depth. Check your sheets before you order the SHOUREN or WhatsBedding pick, or budget for deep-pocket replacements.

What the fill weight numbers really tell you

Three picks publish a GSM figure: WhatsBedding at 2000, NightHug at 1700, D & G at 1400. GSM is grams per square metre of fill, and it's a density measure, not a loft measure.

Here's why that distinction matters. NightHug packs 1700 GSM into 3 inches. WhatsBedding spreads 2000 GSM across 5 inches. Per inch, NightHug is the denser layer. Denser fill generally resists compressing flat over time; loftier, lower-density fill feels plusher initially and settles faster.

Four picks publish no GSM at all: SHOUREN, Niagara, BEDLORE and COONP. That's not automatically a mark against them, since SHOUREN describes a layered gel-and-shredded structure that a single GSM number wouldn't capture well anyway. But it does mean you're comparing words rather than figures.

If you want the most measurable purchase in this shortlist, NightHug and WhatsBedding both give you loft and fill weight together. Nobody else does.

Which cover material should you pick?

The cover is what touches you all night, and this set splits four ways.

• Bamboo viscose or rayon from bamboo: Niagara, BEDLORE and NightHug. Smooth, cool-feeling, drapes well. BEDLORE is the only one stating a ratio, at 40% bamboo viscose to 60% polyester.
• Cotton: COONP alone. Drier feel, more textured, and the safest choice if viscose feels clammy to you.
• Brushed polyester: D & G. Warmer to the touch, hardier in the wash.
• Quilted fabric over foam: SHOUREN's dot quilting and WhatsBedding's circle quilting. Both are described as breathable without naming the fibre.

Pair that with the care instruction, because the two decide your real ownership experience. Niagara, BEDLORE, D & G and COONP all state machine washable. NightHug specifies spot cleaning only, despite having the only certified cover here. SHOUREN and WhatsBedding don't state a washing method in their bullets.

If your bed hosts children or animals, machine washability outranks cover fibre every time.

What owning a plush topper actually involves

Nobody mentions this part in the listing photos, so here it is.

Five of these seven ship vacuum-compressed. SHOUREN, WhatsBedding, NightHug and COONP all say so directly, and each notes the topper looks thinner than expected on opening. SHOUREN and NightHug both quote 24 to 48 hours for full expansion. That means you cannot unbox one at 10pm and sleep on it properly that night.

The setup sequence is straightforward:

1. Unroll it on the bare mattress and let it breathe in the room.
2. Shake and pat it to redistribute the fill, as COONP's instructions specify.
3. Wait the stated 24 to 48 hours before judging the loft.
4. Fit your sheets last, once it's reached full height.

Anchoring differs and it affects daily life. SHOUREN and D & G use four elastic corner straps. Niagara, BEDLORE, COONP, WhatsBedding and NightHug use an elasticated deep pocket that behaves like a fitted sheet. The pocket approach only grips if your mattress falls inside the stated range, which is why the 6 to 22 inch window on the D & G pick and the 8 to 21 inch windows elsewhere are worth measuring against your own bed before you order.

The verdict

At the entry end, BEDLORE is the cheapest of the seven and the only pick publishing an exact 40% bamboo viscose to 60% polyester blend, with three sellers stocking it. Niagara sits just above it and is the one buyers choose most often here, with a published 2.95-inch loft and an 8 to 20 inch depth fit in a King. If you want softness added rather than your mattress replaced, Niagara is the smarter entry buy.

The middle tier is COONP, the only cotton surface in this set, fitting 8 to 21 inch mattresses and machine washable. It's the sensible choice if viscose covers don't agree with you and you don't need a published loft figure to commit.

At the premium end, the best extra soft mattress topper for back sleepers is the SHOUREN 5 Inch topper. Five inches of published loft, gel foam layered over shredded foam, and four corner anchor straps make it the most complete plush rebuild here. NightHug's exact advantage is certification plus measurability: the only OEKO-TEX Standard 100 cover in the set, with both a 3-inch loft and 1700 GSM stated. D & G is the pick if your mattress is only 6 inches deep, since nothing else reaches that low.

FAQ

Is an extra soft mattress topper worth it for back sleepers?

An extra soft mattress topper is worth it mainly when your mattress is genuinely too firm. None of these seven listings publishes a firmness rating or a position-specific test, so treat the softness as a comfort preference rather than a spine solution. If your current bed feels punishing, a 3-inch layer like NightHug's is a safer starting point than a 5-inch one.

How much loft do I actually need on a firm mattress?

How much loft you need scales with how hard the bed feels. On a very firm mattress, the 5-inch SHOUREN or WhatsBedding options give you real room to sink. On a medium mattress, Niagara's published 2.95 inches or NightHug's 3 inches adds cushioning without dropping your hips below your shoulders. Measure your mattress depth first.

What is the best extra soft mattress topper for back sleepers on a budget?

The best extra soft mattress topper for back sleepers on a budget is the BEDLORE Queen. It's the cheapest of the seven, publishes a 40% bamboo viscose and 60% polyester blend, states machine washability, and has three sellers stocking it. The compromises are a Dark Gray colour that shows under pale sheets and no published loft figure to compare.

Will these toppers fit a 20-inch mattress?

These toppers fit a 20-inch mattress in most cases here. Niagara states 8 to 20 inches. WhatsBedding, COONP and NightHug each quote 8 to 21 inches. D & G reaches 6 to 22 inches, the widest window in the set. SHOUREN uses corner straps rather than a depth-rated pocket, so measure before ordering.

SHOUREN or NightHug: which should I choose?

Choose SHOUREN or NightHug based on loft and care. SHOUREN gives you 5 inches of layered gel and shredded foam plus four corner anchor straps, which suits a very firm mattress. NightHug gives you 3 inches, 1700 GSM of shredded fill and the only OEKO-TEX Standard 100 cover here, but it's spot clean only.

Measure two things tonight: your mattress depth and your fitted sheet's pocket depth. Those two figures rule out more of this shortlist than any comfort description will, and they take a tape measure and a minute. If both numbers give you room, the SHOUREN 5 Inch topper is the default because it's the only pick pairing the deepest published loft in the set with corner straps that hold it there. If your sheets cap out at 15 inches or your bed already sits high, drop to Niagara at 2.95 inches and add softness without rebuilding the whole stack.

Last updated: October 5, 2026. Product availability re-checked.

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