The Under Armour Mens Unstoppable Fleece Crewneck Sweatshirt in Summit White with Black. It’s made with our most premium fleece fabric that’s smooth on both sides, stretches when you need it, and breathes easily, so you can step out confidently. The double-knit fabric is soft, stretchy & breathable for superior comfort & mobility. Material wicks sweat & dries really fast. 4-way stretch material moves better in every direction.