Cooling Pillowcases: Materials, Sizing & Care Guide
A cooling pillowcase is the outer layer that touches your face all night. Choosing the right fiber, closure style, and size ensures your pillowcase complements your pillow rather than restricting its loft.
Standard vs. Queen vs. King Pillowcase Sizing
- Standard (20 x 26 in to 20 x 29 in): Fits Standard pillows such as the Casper Original Pillow (18 x 26 in) and Tuft & Needle Original Foam (25 x 16 in). The Buffy Breeze Standard Pillowcases measure 20 x 29 inches to accommodate both Standard and Queen cores.
- Queen (19 x 29 in): Tailored to fit 19 x 29 inch and 17 x 27 inch gusseted Queen pillows cleanly without excess fabric bunching. The Coop Cool Side Pillowcase measures 19 x 29 inches in Queen with a hidden zipper.
- King (19 x 35 in to 20 x 36 in): Designed for 32 to 36 inch wide King pillows.
| 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 | 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 | Full Specs |
See our head-to-head comparison: Buffy Breeze vs. Coop Cool Side Pillowcase.
Frequently Asked Questions
What happens if a pillowcase is too tight for an adjustable or latex pillow?
Squeezing a lofty Queen or gusseted pillow into a tight pillowcase compresses the air channels and makes the pillow feel much firmer than intended.