Cool-to-the-Touch Covers vs. Breathable Fabrics Explained
Understanding the difference between a cool-to-the-touch cover and a breathable fabric helps you avoid buying a pillow that feels icy in the store or for the first five minutes in bed, only to feel warm at 2 a.m.
Thermal Conductivity (Cool-Touch) vs. Air & Vapor Permeability (Breathable)
Cool-to-the-Touch Yarns (Polyethylene & Nylon Knits)
High-molecular-weight polyethylene (PE) and high-gauge nylon fibers have higher thermal conductivity than cotton or standard polyester. When your warm cheek touches a 400 GSM polyethylene-blend knit like the Coop Cool Side Pillowcase or the outer cover of the Coop Cool+ Adjustable Pillow, heat transfers rapidly out of your skin, creating an unmistakable cool sensation.
Breathable & Moisture-Wicking Weaves (Lyocell & Cotton Percale)
100% eucalyptus lyocell (Buffy Breeze Pillowcases), TENCEL Lyocell (Brooklyn Bedding Talalay Latex), and 100% cotton percale (Casper Original Pillow) focus on absorbing moisture vapor and letting convective air move freely between the room and the pillow core.
| Model & Size | Sleep Position Fit | Dimensions & Loft | Fixed vs. Adjustable | Fill Material | Cover Composition | Cooling Mechanism | Washing & Care | Details & Retail |
|---|---|---|---|---|---|---|---|---|
| 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 | Full Specs |
| 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 | Full Specs |
| Coop Cool+ Adjustable Coop Sleep Goods · Queen Classic (SKU CPL005QN-00; 7 lb / 3175 g shipping weight) |
Side, Back, Stomach | 17 in x 27 in with 2 in gusset; user-adjustable loft from low to high | Fully adjustable fill via interlocking dual-case zipper system; includes bonus bag of Oomph Cool+ fill | Oomph Cool+ plus-shaped gel-infused viscoelastic polyurethane foam and microfiber blend | Outer cover: polyethylene, polyester, and spandex cool-touch knit; Inner liner: nylon, polyester, and ventilated phase-change gel memory foam pad on one side | Polyethylene-blend cool-touch outer cover, ventilated phase-change gel foam liner pad, and plus-shaped cross-cut foam fill for internal airflow | Machine wash outer cover separately on cold gentle cycle; do not machine wash gel-lined inner case or foam fill | Full Specs |
| Casper Original Pillow Casper · Standard (SKU PILLOWSTD) |
Back, Side, Stomach | 18 in x 26 in footprint; 9 in uncompressed mid-loft with 2 in structured side gusset | Fixed pillow-in-pillow dual-chamber fiber fill | Polyester microfiber fill in a supportive inner pillow surrounded by a plush outer fiber chamber | 100% cotton percale weave outer cover with polyester lining | 100% cotton percale weave outer shell and airy down-alternative polyester microfibers with a 2-inch gusset for passive breathability | Fully machine washable: unzip outer pillow, remove inner pillow, re-zip outer shell, and wash both in cold water on gentle cycle; tumble dry low with dryer balls | Full Specs |
Frequently Asked Questions
Can I put a regular cotton pillowcase over a cool-to-the-touch pillow?
You can, but a thick woven pillowcase will insulate your skin from the pillow's polyethylene cover. To feel a cool-touch cover directly, either use a thin breathable pillowcase or use a dedicated cooling pillowcase as your outer layer.