Manufacturer-Verified Specs · Updated 2026-10-25

Buffy Breeze Eucalyptus Pillowcases vs. Coop Cool Side Pillowcase

By the CoolingPillows.com Editorial Team Criteria: 10-Point Pillow Spec Framework Sources: 18 Manufacturer-Verified Models

Upgrading your pillowcase is the fastest way to change how your existing pillow feels against your cheek. This matchup compares a plant-based 100% eucalyptus lyocell sateen weave against a high-density 400 GSM synthetic cooling jacquard knit.

Side-by-Side 10-Criteria Specification Comparison

Model & Size	Sleep Position Fit	Dimensions & Loft	Fixed vs. Adjustable	Fill Material	Cover Composition	Cooling Mechanism	Washing & Care	Details & Retail
Buffy Breeze Pillowcases Buffy · Standard Set of 2 (SKU BDSPC-QN-01)	Side, Back, Stomach	20 in x 29 in Standard envelope/slip-on fit (King 20 in x 36 in also manufactured)	Accessory pillowcase set (fits Standard and Queen pillows)	Unfilled woven pillowcase set	100% TENCEL eucalyptus lyocell woven in a smooth 300-thread-count sateen weave	Moisture-absorbent, breathable 100% eucalyptus lyocell fibers that release humidity faster than heavy cotton weaves	Machine wash cold on gentle cycle; tumble dry low	Check price on Amazon Full Specs
Coop Cool Side Pillowcase Coop Sleep Goods · Queen Classic Single Pillowcase (SKU CHG-CPC-QN; 454 g)	Side, Back, Stomach	19 in x 29 in Queen Classic with hidden zipper closure	Accessory pillowcase (offered in Classic, Crescent, and Cut-Out shapes)	Unfilled high-density cooling knit pillowcase	400 GSM Lulltra Cool silky jacquard knit (polyethylene and polyester cooling yarn blend, 1.5x denser than standard 250 GSM knits)	High-thermal-conductivity 400 GSM Lulltra Cool jacquard weave engineered to draw surface heat away on contact	Machine wash separately on cold gentle cycle with mild detergent; lay flat or tumble dry low	Check price on Amazon Full Specs

Key Construction & Care Differences

Fiber & Cooling Mechanism

Buffy Breeze is woven from 100% TENCEL eucalyptus lyocell in a 300-thread-count sateen weave that absorbs and releases moisture vapor to prevent clamminess. Coop Cool Side uses a 400 GSM Lulltra Cool jacquard knit (polyethylene and polyester cooling yarns) engineered for high thermal conductivity and an immediate cool-to-the-touch feel.

Pack Count & Closure Style

Buffy Breeze comes as a set of 2 slip-on pillowcases (20 x 29 in Standard or 20 x 36 in King). Coop Cool Side is sold as a single pillowcase (19 x 29 in Queen or 19 x 35 in King) with a hidden zipper closure and is available in Classic, Crescent, and Cut-Out shapes.

Laundry Care

Both machine wash cold on a gentle cycle without bleach or fabric softeners.

Inspect Both Verified Profiles

Cooling Pillowcases Side SleeperBack SleeperStomach Sleeper

Buffy Breeze Eucalyptus Lyocell Pillowcases (Standard, Set of 2)

Sleepers who want a plant-based 100% eucalyptus lyocell weave that manages moisture and feels smooth without synthetic polyethylene slickness.

Selected Size: Standard Set of 2 (SKU BDSPC-QN-01)
Dimensions & Loft: 20 in x 29 in Standard envelope/slip-on fit (King 20 in x 36 in also manufactured)
Adjustability: Accessory pillowcase set (fits Standard and Queen pillows)
Fill Composition: Unfilled woven pillowcase set
Cover Fabric: 100% TENCEL eucalyptus lyocell woven in a smooth 300-thread-count sateen weave
Cooling Mechanism: Moisture-absorbent, breathable 100% eucalyptus lyocell fibers that release humidity faster than heavy cotton weaves
Care & Washing: Machine wash cold on gentle cycle; tumble dry low

Full 10-Criteria Profile Check price on Amazon

Cooling Pillowcases Side SleeperBack SleeperStomach Sleeper

Coop Sleep Goods Cool Side Pillowcase (Queen, Classic)

Adding an immediate cool-to-the-touch surface and hidden zipper closure to an existing Queen or Standard pillow.

Selected Size: Queen Classic Single Pillowcase (SKU CHG-CPC-QN; 454 g)
Dimensions & Loft: 19 in x 29 in Queen Classic with hidden zipper closure
Adjustability: Accessory pillowcase (offered in Classic, Crescent, and Cut-Out shapes)
Fill Composition: Unfilled high-density cooling knit pillowcase
Cover Fabric: 400 GSM Lulltra Cool silky jacquard knit (polyethylene and polyester cooling yarn blend, 1.5x denser than standard 250 GSM knits)
Cooling Mechanism: High-thermal-conductivity 400 GSM Lulltra Cool jacquard weave engineered to draw surface heat away on contact
Care & Washing: Machine wash separately on cold gentle cycle with mild detergent; lay flat or tumble dry low

Full 10-Criteria Profile Check price on Amazon

Frequently Asked Questions

Which pillowcase feels colder the moment your head touches it?

The Coop Cool Side 400 GSM polyethylene-blend knit conducts warmth away from skin faster on initial contact, while Buffy Breeze feels like smooth, breathable botanical sateen.

Which option is better if you dislike slick synthetic fabrics?

Buffy Breeze is made from 100% plant-derived eucalyptus lyocell and avoids the slick stretch feel of polyethylene/spandex blends.