Head-to-head · Best Cooling Pillows

Coop Sleep Goods Cool+ Adjustable Pillow vs Cozy Earth Mulberry Silk 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 #5 in Best Cooling Pillows

Cozy Earth Mulberry Silk Pillow

4.5

$330

The Cozy Earth Silk Pillow is the luxury, naturally-cooling option in this lineup — 100% mulberry silk fill inside a premium bamboo viscose shell, with a 10-year warranty Cozy Earth backs against any defect. Cooling here is passive and gentle rather than aggressive, but reviewers consistently rate it the most comfortable pillow they've ever tested. Best for hot sleepers who prefer luxury bedding feel over engineered cooling tech.

Strengths

— 100% long-strand mulberry silk fill — naturally breathable, hypoallergenic, and moisture-wicking
— Premium bamboo viscose shell stays cool to the touch and doesn't trap body heat
— Plush, weightless feel comparable to a down pillow without the allergens

Watch-outs

— Most expensive pillow on this list — $330 MSRP, often discounted to $200-264 on sale
— Cooling is passive rather than active; cool-touch sensation fades under a thick cotton pillowcase
— Cannot be machine-washed — silk fill is spot-clean and air-dry only

$330 · Buy at cozyearth.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.

Cozy Earth Mulberry Silk Pillow

The luxury counterpoint to everything else in this lineup. Where the Coop Cool+, Slumber Cloud UltraCool, and Purple Harmony are engineering-led approaches to cooling, the Cozy Earth is a materials-led approach — silk and bamboo just happen to be naturally cool. Doesn't compete with the Saatva Latex Pillow on warranty (Saatva's lifetime beats Cozy Earth's 10 years) but does compete on feel — both pillows aim for a plush, premium hand. Skip if you want pure cooling performance; pick if you want cooling alongside a luxury sleep experience.

Specs side-by-side

Spec	Coop Sleep Goods Cool+ Adjustable Pillow	Cozy Earth Mulberry Silk Pillow
Material	Gel-infused memory foam + microfiber	100% long-strand mulberry silk + bamboo viscose
Fill	Plus-shaped shredded foam (adjustable)	100% AAA-grade mulberry silk floss
Cover	Cool-touch knit with PCM layer	100% premium bamboo viscose shell
Cooling Tech	Phase-change gel + Q-max 0.48 cool-touch surface	Passive — silk breathability + bamboo cool-touch
Loft Adjustable	Yes — add/remove fill via zipper	No — single fixed loft
Sizes	Queen 17x27, King 17x33	Standard, King
Certifications	CertiPUR-US, GREENGUARD Gold	OEKO-TEX certified
Trial Period	100 nights	100 nights
Warranty	5 years	10 years
Care	Machine wash cover cold, tumble dry low; spot clean foam	Spot clean, air dry only
Loft Options	None — fully adjustable (add/remove fill)	Single loft, ~5-6 inch

← See the full ranking of best cooling pillows