●100% Knit ●Imported ●Pull On closure ●Machine Wash ●Super-soft, cotton-blend fabric provides all-day comfort ●Ribbed collar ●The technology behind Under Armours diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when its hot, ColdGear when its cold, and AllSeasonGear between the extremes.