Polyester fiberfill
{{Short description|Synthetic fiber used for stuffing}}
Polyester fiberfill is a synthetic fiber used for stuffing pillows{{Cite news|url=http://homeguides.sfgate.com/make-pillow-polyfill-95023.html|title=How to Make a Pillow With Polyfill|access-date=2017-11-04|language=en}} and other soft objects such as stuffed animals.{{Cite news|url=https://www.fairfieldworld.com/poly-fil-crafters-choice-dry-packing-fiber-fill/|title=Poly-Fil Crafter's Choice Dry Packing FIber Fill - Fairfield World|work=Fairfield World|access-date=2017-11-04|language=en-US}} It is also used in audio speakers for its acoustic properties.{{Cite news|url=https://knowledge.sonicelectronix.com/what-is-polyfill/|title=What is Polyfill and Why Should I Use It? {{!}} Learning Center {{!}} Sonic Electronix|last=|first=|date=2013-08-15|work=Learning Center {{!}} Sonic Electronix|access-date=2019-09-21|language=en-US}} It is commonly sold under the trademark name Poly-Fil,{{Cite web|url=http://www.joann.com/32oz-poly-fil-premium-polyester-fiberfill/7400203.html|title=Poly-Fil® Premium Polyester Fiber, White, 1 Bag, 32 Ounces {{!}} JOANN|website=Joann.com|language=en|access-date=2017-11-04}}{{Cite web|url=https://www.trademarkia.com/polyfil-86948056.html|title=Apply for a Trademark. Search a Trademark|website=trademarkia.com|language=en|access-date=2017-11-04}} or un-trademarked as polyfill.