Arcteryx A2B Polo Shirt - Men's Polylain - 58% Polyester, 42% Wool; Diem - 100% Polyester Made in USA Polylain wool blend knit fabric is lightweight and durable and contains the natural anti odour properties of wool Trim fit with generous length ideal for bike commuting Contrast fabric on collar, shoulder panels and bottom hem Gel Bird logo Diem-100 Polyester, 110 g/m2. Lightweight, breathable, stretchy textile that is quick-drying, wrinkle resistent and easy to care for