Head-to-head · Best Cooling Sheets

Coop Sleep Goods Cool+ Sheet Set vs Sijo AiryWeight Eucalyptus Sheet Set

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

Sijo AiryWeight Eucalyptus Sheet Set comes out ahead by a narrow margin (4.4 vs 4.6). The gap is mostly about the hottest sleepers, night-sweat sufferers, humid-climate buyers, and eco-conscious shoppers wanting FSC-certified sustainable fiber — read the strengths below before deciding.

Ranked #4 in Best Cooling Sheets

Coop Sleep Goods Cool+ Sheet Set

4.4

$179

The Coop Sleep Goods Cool+ Sheet Set is the cool-to-touch champion — a nylon-spandex blend engineered for the highest cooling sensation measurement (Qmax 0.45) of any sheet in this lineup. Sleep Foundation scored it 8.8/10 with specific praise for hot or humid summer nights, and Apartment Therapy's tester reported the sheets majorly cooled them down during 90-degree weather when their AC couldn't keep up. The synthetic composition is the trade-off: buyers who want natural-fiber feel should look at Brooklinen, Cozy Earth, or Sijo instead.

Strengths

— Qmax cool-to-touch score of 0.45 — the highest in this lineup
— Sleep Foundation 8.8/10 for cooling performance
— Stretchy nylon-spandex construction stays wrinkle-free out of the dryer

Watch-outs

— Synthetic nylon-spandex composition turns off buyers who want natural fiber
— Some long-term users report pilling after several months of use
— Limited color palette (white, grey blue, dove grey)

$179 · Check Price on Amazon Full review →

Higher ratedRanked #3 in Best Cooling Sheets

Sijo AiryWeight Eucalyptus Sheet Set

4.6

$185

The Sijo AiryWeight Eucalyptus Sheet Set is the lightweight cooling specialist — Tom's Guide gave it 4.8/5 and named it their top cooling pick, while Architectural Digest awarded it Best Cooling Sheets. At 130 GSM the fabric is the lightest in this lineup, which combined with eucalyptus lyocell's moisture absorption (70% more than cotton, per Sijo's testing) makes it the right pick for the hottest sleepers and humid climates. Sustainable sourcing from FSC-certified forests and Oeko-Tex Class 1 certification appeal to eco-conscious buyers.

Strengths

— 100% TENCEL lyocell from FSC and PEFC-certified eucalyptus wood
— Absorbs 70% more moisture than cotton per Sijo's lab measurement
— Tom's Guide top cooling pick at 4.8/5 stars

Watch-outs

— Only a 30-day trial (vs Cozy Earth's 100 nights and Brooklinen's 365)
— Oil stains stay visible even after washing
— Thinner fabric won't suit buyers who want substantial weight

$185 · Check Price on Amazon Full review →

How they stack up

Coop Sleep Goods Cool+ Sheet Set

The pure cool-to-touch winner — Qmax 0.45 beats the Brooklinen Classic Percale, Cozy Earth Bamboo, Sijo AiryWeight, and Quince Organic Percale on the instrumented cooling-sensation metric. But the synthetic nylon-spandex composition is the structural trade-off versus the all-natural cotton, bamboo viscose, and eucalyptus lyocell in the other four sets. Stays wrinkle-free out of the dryer (the only sheet in this lineup that does) and stretchy fit anchors to the mattress better than any woven alternative. Lacks the long-term natural-fiber durability that Brooklinen and Cozy Earth deliver.

Sijo AiryWeight Eucalyptus Sheet Set

Lighter and more breathable than the Cozy Earth Bamboo Sheet Set (130 GSM vs Cozy Earth's substantial 300 thread count), and absorbs more moisture by fiber chemistry — though the Cozy Earth feels more substantial. Cooler in absolute moisture-wicking terms than the Brooklinen Classic Percale and Quince Organic Percale (lyocell absorbs more than cotton), but the percale weave airflow advantage means Brooklinen still wins on direct convective cooling. The Coop Cool+ wins the pure cool-to-touch metric but uses synthetic nylon-spandex versus Sijo's all-natural eucalyptus lyocell.

Specs side-by-side

Spec	Coop Sleep Goods Cool+ Sheet Set	Sijo AiryWeight Eucalyptus Sheet Set
Material	Nylon and spandex blend (CoolPhiber)	100% TENCEL lyocell from eucalyptus
Cooling Score	Qmax 0.45 of 0.50	—
Set Includes	1 fitted + 1 flat + 2 pillowcases	1 fitted + 1 optional flat + 2 pillowcases
Pocket Depth	16 inches	16 inches
Sizes	Twin through Cal King	Twin through Cal King
Certifications	OEKO-TEX Standard 100	Oeko-Tex Class 1, Asthma and Allergy Friendly
Care	Machine wash cold, tumble dry low	Machine wash cold, tumble dry low
Trial	100 nights	30 days
Warranty	1-year limited	—
Weight	—	130 GSM
Country of Origin	—	Shanghai, China or Mumbai, India

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