Most listings are polyester (often labeled “100% Polyester”). Several styles use straw or paper-straw construction, including tightly woven paper-straw for visor-style hats.
Brim widths range from about 3 inches up to 4.9 inches; examples shown include 3 in, 4 in, 4.5 in, and 4.9 in.
They advertise UPF 50+ sun protection; descriptions note UPF 50+ fabric blocks roughly 98% of harmful UVA/UVB rays.
Several styles are designed to be packable—foldable, roll‑up, or pop‑back—so they can fold flat or roll into a bag and generally return to shape after unpacking.
Care varies by style: many recommend hand wash and line‑dry or lay flat; straw styles typically advise spot or wipe clean; one listing notes machine‑washable in a mesh bag.
Breathability features include mesh vents or mesh side panels plus moisture‑wicking sweatbands to improve airflow and manage perspiration.