Head-to-head · Best Cooling Pillows

Coop Sleep Goods Cool+ Adjustable Pillow vs Slumber Cloud UltraCool Pillow

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Coop Sleep Goods Cool+ Adjustable Pillow comes out ahead by a narrow margin (4.7 vs 4.5). The gap is mostly about Hot sleepers who also want adjustable loft — combo sleepers, side sleepers who shift positions, menopausal sleepers who need a configurable cool surface they can re-shape mid-night. — read the strengths below before deciding.

Higher ratedRanked #1 in Best Cooling Pillows

Coop Sleep Goods Cool+ Adjustable Pillow

4.7

$149

The Coop Cool+ is the clearest upgrade Coop has shipped in years for hot sleepers, combining a phase-change gel cover with plus-shaped foam that breathes about 50% better than the original Eden. Tom's Guide and HGTV both crowned it the best adjustable cooling pillow of the year, and the 100-night trial makes the price easier to stomach. It is the pillow to pick if you also want the adjustability of shredded fill, not just contact-cooling.

Strengths

— Phase-change gel-infused plus-shaped foam keeps the surface measurably cooler than the original Coop Eden
— Dual-firmness flip design: one side runs supercooled and firmer, the other softer and cushioning
— Adjustable fill with included extra Oomph bag — shape it from pancake-flat to chunky side-sleeper loft

Watch-outs

— At $149 queen / $169 king it costs more than most adjustable foam pillows
— Cooling sensation fades modestly with prolonged head contact even with the PCM cover
— Heavy at over 4 lb queen — re-fluffing the shredded fill takes more effort than a down alternative

$149 · Buy at coopsleepgoods.com Full review →

Ranked #2 in Best Cooling Pillows

Slumber Cloud UltraCool Pillow

4.5

$154

Slumber Cloud built their reputation on Outlast PCM bedding, and the UltraCool Pillow is the flagship application of the same NASA-engineered fabric in their pillow line. CNN Underscored's tester said it was one of only two cooling pillows that actually cooled them overnight; Good Housekeeping named it Best Cooling Pillow. Pick it if you want pure cooling tech and don't need adjustability.

Strengths

— NASA-derived Outlast phase-change material absorbs, stores, and releases heat across the full night
— Named Best Cooling Pillow by Good Housekeeping and CNN Underscored for sustained overnight cooling
— Two firmness options (Soft/Medium, Medium/Firm) and three sizes including a 48-inch body pillow

Watch-outs

— Initial cool-touch sensation fades faster than some competitors as the PCM saturates
— 30-night trial is the shortest in this lineup — Saatva and Coop both run far longer
— Cooling works best without a cover; adding a thick pillowcase noticeably reduces the effect

$154 · Buy at slumbercloud.com Full review →

How they stack up

Coop Sleep Goods Cool+ Adjustable Pillow

More adjustable than the Slumber Cloud UltraCool and the Saatva Latex Pillow, both of which fix loft at the factory. Sleeps measurably cooler than the Cozy Earth Silk Pillow once you actually put a case on it, because the Cool+ cover keeps its bite through cotton. The Purple Harmony beats it on raw airflow, but the Cool+ is the only pillow here you can rebuild from a flat 3-inch profile to a 7-inch slab in two minutes.

Slumber Cloud UltraCool Pillow

Trades adjustability for pure cooling performance versus the Coop Cool+ — UltraCool's loft is fixed at the factory but the Outlast PCM is the most proven temperature-regulating fabric in the category. Cools more aggressively on contact than the Saatva Latex Pillow, but the Saatva's all-night airflow story is more consistent in a hot bedroom. Roughly tied with the Purple Harmony on overnight temperature; the Purple offers more responsive support, the UltraCool offers a softer, down-alternative-like feel.

Specs side-by-side

Spec	Coop Sleep Goods Cool+ Adjustable Pillow	Slumber Cloud UltraCool Pillow
Material	Gel-infused memory foam + microfiber	Down-alternative polyester fiberfill
Fill	Plus-shaped shredded foam (adjustable)	100% polyester fiberfill (adjustable on Adjustable model)
Cover	Cool-touch knit with PCM layer	100% polyester knit with Outlast coating
Cooling Tech	Phase-change gel + Q-max 0.48 cool-touch surface	Outlast phase-change material (NASA-derived)
Loft Adjustable	Yes — add/remove fill via zipper	Yes on Adjustable model; fixed on standard
Sizes	Queen 17x27, King 17x33	Standard 20x26, King 20x36, Body 20x48
Certifications	CertiPUR-US, GREENGUARD Gold	OEKO-TEX STANDARD 100
Trial Period	100 nights	30 nights
Warranty	5 years	180 days
Care	Machine wash cover cold, tumble dry low; spot clean foam	Machine wash cold, tumble dry low
Loft Options	None — fully adjustable (add/remove fill)	—

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