The fill decides most of what you feel: how a pillow holds its height, how warm it sleeps, whether it smells when new and whether it can go in the washer. Each page explains one material and lists the pillows we score that use it.
Memory foam
Memory foam pillows: what the foam does and what buyers complain about
Shredded memory foam
Shredded memory foam: why adjustable pillows use it
Down & feather
Down and feather pillows: fill power, feather share and care
Down alternative
Down alternative pillows: polyester fiber, gel fiber and loft
Latex & gel grid
Latex and gel grid pillows: the bouncy, springy end of the shelf
Cooling materials
Cooling pillows: what gel, phase-change covers and airflow actually do
Covers & fabrics
Pillow covers and shell fabrics: cotton, bamboo rayon, polyester
Certifications
CertiPUR-US, OEKO-TEX and RDS: what pillow certifications prove
