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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.

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The short answer

Coop Sleep Goods Cool+ Sheet Set and Sijo AiryWeight Eucalyptus Sheet Set score essentially the same (4.4 vs 4.4). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Coop Sleep Goods Cool+ Sheet Set
Ranked #5 in Best Cooling Sheets
Coop Sleep Goods Cool+ Sheet Set
3 sources$119.2as of Aug 1

Cool-to-the-touch is where the Coop Sleep Goods Cool+ Sheet Set wins: its nylon-spandex blend posts 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 said the sheets majorly cooled them down during 90-degree weather when their AC couldn't keep up. The synthetic composition is the trade-off; anyone who wants a 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)
$119.2 · Check Price on AmazonFull review →
Sijo AiryWeight Eucalyptus Sheet Set
Ranked #4 in Best Cooling Sheets
Sijo AiryWeight Eucalyptus Sheet Set
3 sources$51as of Aug 1

The Sijo AiryWeight Eucalyptus Sheet Set is the lightweight cooling specialist. Tom's Guide gave it 4.8/5 and made it the top cooling pick in its bed-sheet guide, and Sleep Foundation scored it 7.8/10 with particular praise for breathability. At 130 GSM the fabric is the lightest in this lineup, and Sijo's own lab measurement puts eucalyptus lyocell at 70% more moisture absorption than cotton, which points the set squarely at the hottest sleepers and the most humid climates. The trial window is short and the fabric is thin — deliberately so.

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
$51 · Check Price on AmazonFull 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

SpecCoop Sleep Goods Cool+ Sheet SetSijo AiryWeight Eucalyptus Sheet Set
MaterialNylon and spandex blend (CoolPhiber)100% TENCEL lyocell from eucalyptus
Cooling ScoreQmax 0.45 of 0.50—
Set Includes1 fitted + 1 flat + 2 pillowcases1 fitted + 1 optional flat + 2 pillowcases
Pocket Depth16 inches16 inches
SizesTwin through Cal KingTwin through Cal King
CertificationsOEKO-TEX Standard 100Oeko-Tex Class 1, Asthma and Allergy Friendly
CareMachine wash cold, tumble dry lowMachine wash cold, tumble dry low
Trial100 nights30 days
Warranty1-year limited1-year
WeaveKnitSateen
Weight—130 GSM
Country of Origin—Shanghai, China or Mumbai, India
← See the full ranking of best cooling sheets