Armour Fleece is our original performance replacement for old-school fleece and we just made it even better. It's warmer softer and more plush but still has just the right amount of stretch. Armour Fleece is our original performance replacement for old-school fleece-and we just made it even better. It's warmer, softer, and more plush, but still has just the right amount of stretch. Armour Fleece is our original performance replacement for old-school fleece-and we just made it even better. It's warmer softer and more plush but still has just the right amount of stretch.