1. Look for a 2nd label β often sewn inside a side seam, near the bottom
2. Look it up β search the brand + item name; the store page lists the fabric
Gym clothes, leggings β slick, stretchy, quick-drying
Synthetic β
Plain tees, sweatshirts, towels
Cotton β
Sweaters, warm socks, "merino" β springy, itchy, wet-dog smell when wet
Wool β
Shiny, smooth, dressy (unless you know it's polyester)
Maybe silk β
Drapey, flowy, or extra-soft "bamboo"
Rayon β
Melts into a hard bead, plastic smell
Synthetic β
Burns like paper, soft gray ash
Cotton or rayon β tell by feel
Smells like burnt hair
Wool or silk β