Is Your Sun Hat Really Protecting You? UPF Ratings Explained by Fabric Science

UPF: weave, dye block UV rays; properties, usage, shrinkage, washing, dyeing, care cotton, wool, silk, polyester, nylon, blends.
High Fashion Fabric Experts
High Fashion Fabric Experts
Fabric Weight (GSM) is the mass per square meter of fabric, indicating density and influencing drape, warmth, and durability.

UPF: weave, dye block UV rays; properties, usage, shrinkage, washing, dyeing, care cotton, wool, silk, polyester, nylon, blends.