Armour Fleece® is our original performance replacement for old-school fleece. It's light, incredibly warm, and has just the right amount of stretch. Armour Fleece® is light, breathable & stretchy for warmth that still lets you move. Soft inner layer traps heat to keep you warm & comfortable. Ribbed collar, cuffs & bottom hem. Raglan sleeves. . . . . . . 100% Polyester.