100 percent Merino wool. Fabric woven in the USA. Dry clean only.

Pendleton Woolen Mills' product description-
A traditional men's plaid shirt crafted from pure merino wool yarns that are tightly spun, then woven in into a lightweight, durable fabric with a smooth hand and excellent drape. The weight and breathability make it a comfortable choice in any season. Spread collar, shirttail hem and one matched chest pocket.