Our verdict
The name sets the test, and the early buyer record does not pass it. Its complaint profile scores 2, the weakest part of a 5.1 overall, built from 238 ratings that average 4.0 stars.
Care earns a 10 and value 8.8, since the pair costs exactly the $23 median for down-alternative fiber. Fit range and materials both sit at 4. With fewer than 300 ratings, this is an early read and not ranked.
Suits
- Anyone who wants a cotton-cased fiber pillow they can machine wash
- Guest beds where the pillow sees occasional use
Think twice if
- Holding loft is the reason you are buying: 76% of flatness mentions are negative
- You want firm support, since 70% of firmness mentions are negative
- You need a size other than standard or queen
Buyer ratings
What 238 buyers say
Buyers give the Won't Go Flat Pillow 4.0 out of 5 from 238 ratings. Adjusted for pool size, the Won't Go Flat Pillow averages 4.15, with 18% of its ratings at one or two stars.
- 5 star61%
- 4 star13%
- 3 star8%
- 2 star6%
- 1 star12%
Topics buyers raise most
- Quality40 mentions: 48% positive, 53% negative
- Firmness20 mentions: 30% positive, 70% negative
- Value for money18 mentions: 33% positive, 67% negative
- Flatness17 mentions: 24% positive, 76% negative
- Durability10 mentions: 40% positive, 60% negative
Read the topics before the stars. Flatness comes up 17 times and 76% of those buyers are negative. Durability, 10 mentions, runs 60% negative, and firmness, 20 mentions, 70% negative. Even quality tips against it at 53% negative across 40 mentions.
The star histogram looks kinder than that: 61% five stars and 13% four. But 12% of ratings are one star, and value for money, raised 18 times, is 67% negative. Topic counts this small can shift, yet every one of them points the same way.
Fill and feel
Fiber around what Serta calls a form core zone
Serta describes down-alternative fiber built around a "form core zone" that, it says, helps the pillow keep its loft and shape over time. That is exactly the claim the flatness count tests. The maker rates the feel medium for any position, and the details table gives a thickness of 2 inches.
Cover
Three hundred thread count with a stain-release finish
The cover is 300-thread-count cotton with what Serta calls stain release technology and an allergen barrier weave. Treat the barrier as the maker's description, not a medical guarantee. If allergies drive your choice, your clinician is a better guide than any pillow label.
Care
Spin twice, then dry with tennis balls
Wash the pillow alone in cold water on a gentle cycle, run the spin twice to pull out water, and tumble dry low with clean tennis balls, the maker says. Take it out promptly and fluff it. Skip the iron.
Value
Nineteen dollars a pillow, and a cooling version for one more
The original pair costs $27.99, or $22.80 a pillow, and a cooling version costs $39.99, or $20. Each pillow measures 20 by 28 inches. For two dollars more a pillow, Serta's own Medium Soft Bed Pillow scores 7.4 on a ranked pool, and the JOLLYVOGUE Down Alternative set scores 7.5 at $9.25 a pillow.
Photos
The Serta Won't Go Flat Pillow in photos
Product photos published by Serta.
Sizes and prices
Sizes, packs and prices
| Option | Size | Pillows | Price | Per pillow | Buy |
|---|---|---|---|---|---|
| Cooling / Standard/Queen | Standard/Queen | 2 | $39.99 | $20 |  |
| Original / Standard/Queen | Standard/Queen | 2 | $45.60 | $22.80 | |
The score
How the 5.1 adds up
Six parts, the same weights for every pillow on this site. The full method, with the formula for each part, is on our scoring page.
| Part | Weight | Score | From |
|---|---|---|---|
| Buyer satisfaction | 35% | 5.3 | 4.0 stars from 238 ratings, adjusted 4.15; 18% one or two stars |
| Complaint profile | 20% | 2.0 | 62.1% of fault-type topic mentions are negative |
| Fit range | 15% | 4.0 | fixed fill, 1 size |
| Materials & proof | 10% | 4.0 | No certification stated |
| Care & cover | 10% | 10.0 | Whole pillow machine washable |
| Value | 10% | 8.8 | $22.80 per pillow against a $25 median for down alternative fiber |
Alternatives
Other down alternative fiber pillows
JOLLYVOGUE Down Alternative Pillows, Set of 4
Down alternative fiber
7.5$9.25 per pillow
Serta Medium Soft Bed Pillow
Down alternative fiber
7.4$25 per pillow
Utopia Bedding Hotel Pillows, Set of 4
Down alternative fiber
7.2$7.62 per pillow
JOLLYVOGUE Hotel Collection Pillows, Set of 4
Down alternative fiber
7.2$8.25 per pillowSame brand
More from Serta
The Won't Go Flat Pillow is one of 6 Serta pillows we score. Who makes the Won't Go Flat Pillow, and what the trial and warranty say, is on the Serta brand page.
Questions
Questions about the Serta Won't Go Flat Pillow
Does the Serta Won't Go Flat pillow actually stay full?
The early record says often not. Of 17 buyers who mention flatness, 76% are negative. The pool is small at 238 ratings, so treat this as a warning rather than a verdict.
How should you wash a Serta Won't Go Flat pillow?
Cold, gentle and on its own, with a double spin and a low dryer with tennis balls, according to the maker.
