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Serta Perfect Sleeper Comfy Sleep Pillow vs Mainstays Back & Side Sleeper Pillow

The Serta Perfect Sleeper is the softer, more breathable pillow, with a 300-thread-count microfiber cover and recycled SupraLoft fill that suits stomach and back sleepers who want a plush feel. The Mainstays Back & Side Sleeper is the firm choice: extra-firm polyester microfiber that holds its shape for side sleepers who need neck support. Owners rate the Serta well at 4.4 from about 1,900 ratings; the Mainstays is a basic budget pillow with a plainer cover. Buy the Serta for softness and washability, the Mainstays for firmness.

  • Choose the Serta Perfect Sleeper if you sleep on your stomach or back, want a soft breathable pillow, and value a washable recycled-fiber build.
  • Choose the Mainstays Back & Side Sleeper if you sleep on your side and want an extra-firm pillow that keeps its loft under your neck.

Prices

  • Serta Perfect Sleeper Comfy Sleep Pillow: $26.92 at Walmart (checked today)
  • Mainstays Back & Side Sleeper Pillow: $15.68 at eBay (checked today)
  • Difference: the Mainstays Back & Side Sleeper Pillow is $11.24 cheaper than the Serta Perfect Sleeper Comfy Sleep Pillow today
Serta
Serta Perfect Sleeper Comfy Sleep Eco-Friendly Bed Pillow

Serta Perfect Sleeper Comfy Sleep Pillow

Serta Perfect Sleeper Comfy Sleep Eco-Friendly Bed Pillow

4.4(1,944 ratings)
$26.92at WalmartChecked 52 min ago
See all prices and details
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Pros
  • Soft, breathable microfiber cover
  • Recycled fill and cover, hypoallergenic
  • Machine washable
  • Strong owner ratings
Cons
  • Too soft for side sleepers who need firm support
  • Sold as a two-pack only
Mainstays
Mainstays Back & Side Sleeper Bed Pillow

Mainstays Back & Side Sleeper Pillow

Mainstays Back & Side Sleeper Bed Pillow

$15.68at eBayChecked 1 h ago
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Store links may earn us a commission.

Pros
  • Extra-firm support for side sleepers
  • Hypoallergenic polyester fill
  • Four-pillow pack
  • Simple care
Cons
  • Plain cover, no cording or tight weave
  • Too firm for stomach sleepers
  • Fewer owner ratings to judge by

What separates them

Serta Perfect Sleeper Comfy Sleep PillowMainstays Back & Side Sleeper Pillow
FirmnessSoft, plush feelExtra-firm support
Cover300-thread-count microfiber with satin cordingPlain 100% polyester
FillSupraLoft Plus recycled polyester, hypoallergenicPolyester microfiber, hypoallergenic
BreathabilityTight-weave breathable coverStandard polyester cover
Machine washableYes, cover and fillSpot clean or wash per care label
Sleep positionStomach and back sleepersSide and back sleepers
Pack countTwo pillowsFour pillows
Owner ratings4.4 of 5 from about 1,900 ratingsFewer published ratings

Price history

$26.78$13.88
Nov 8Nov 10
  • Serta Perfect Sleeper Comfy Sleep Pillow: lowest $13.88 on Nov 8 at Walmart; $13.88 on Nov 10.
  • Mainstays Back & Side Sleeper Pillow: lowest $15.68 on Nov 10 at eBay.

Prices at every store

Serta Perfect Sleeper Comfy Sleep Pillow

  • WalmartNew

    In stockSold by KanzaraReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $26.92Checked 52 min ago
    Visit Walmart
  • MercariNew

    In stock

    $19.00+ $9.99 shippingChecked Nov 9
    Visit Mercari

Also available at

  • WalmartCheck price at Walmart
All 2 stores and price history →

Mainstays Back & Side Sleeper Pillow

  • eBayNew

    In stock

    $15.68Free shippingChecked 1 h ago
    Visit eBay
  • WalmartNew

    In stock

    $31.84+ $6.99 shippingChecked Nov 9
    Visit Walmart
  • WalmartNew

    Out of stock

    $15.92Checked 1 h ago
    Visit Walmart

Store links may earn us a commission.

All 2 stores and price history →

Specs compared

SpecSerta Perfect Sleeper Comfy Sleep PillowMainstays Back & Side Sleeper Pillow
bed_pillow_sizeStandard/QueenStandard/Queen
colorWhiteRed
size28 x 20Standard
number_of_pieces2—
Monochrome or MulticoloredMonochrome—
MaterialPolyester—
multipack_quantity—2
Fill—Polyester
Hypoallergenic—Yes
Count—4 pillows

What reviewers say

Serta Perfect Sleeper Comfy Sleep Pillow

  • 4.4 / 51,944 ratings

Buyers rate the two-pack well overall, calling it soft and good value. The most common complaint is that the pillows lose loft and need fluffing or replacing sooner than expected.

What people mention
  • LoftCriticisedOwners say the pillows flatten and need regular fluffing.
  • SoftnessPraisedBuyers describe the cover and fill as soft and comfortable.
  • ValuePraisedReviewers call the two-pack a good deal for the price.
  • WashabilityPraisedOwners report the pillows hold up in the washing machine.

Mainstays Back & Side Sleeper Pillow

Owners of firm pillows like this one generally describe a dense, supportive feel that holds up for back and side sleeping, while softer-pillow sleepers find it stiff. Complaints center on firmness and warmth rather than durability.

What people mention
  • FirmnessMixedBack and side sleepers like the extra-firm support, but soft-pillow sleepers find it too hard.
  • SupportPraisedOwners say it keeps the neck aligned and holds its shape through the night.
  • HeatCriticisedSome sleepers say the polyester fill traps warmth.
  • LoftMixedA few owners report the pillow flattens over time and needs fluffing.

Questions and answers

Which is better for side sleepers?
The Mainstays. Its extra-firm fill keeps loft under the neck, which side sleepers need. The Serta is soft and compresses more.
Which is better for stomach sleepers?
The Serta. A soft pillow keeps the head low and the neck neutral for stomach sleepers. The Mainstays is too firm for that position.
Which lasts longer?
Both use polyester fill that flattens over time. The Serta's tighter cover and machine washability help it stay clean longer; a pillow protector extends either one.
Is the Serta worth stepping up to?
If you want a softer, breathable pillow with a better cover and recycled fill, yes. If you need firm neck support, the Mainstays suits you better.
Are either of these good for allergies?
Both are labeled hypoallergenic with polyester fill. The Serta's tight-weave cover adds an allergen barrier, and both are washable.

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More comparisons

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  • Mainstays Back & Side Sleeper Bed Pillow vs Sertapedic Won't Go Flat Pillow Standard/Queen

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