Vest Under Armour Unstoppable 2X Knit Sl Hoodie. Vest Under Armour Unstoppable 2X Knit Sl Hoodie. Men's head vest with a hood in fitted trim in a lightweight woven fleece fabric that is breathable and very elastic. The materials used dissipates moisture and dries faster. Cross design hood adjustable with a drawstring. Front roomy pocket. Ribbed hems. Technology: Moisture Transport System (Wicks sweat away from your body to the surface of your clothes, making it easier to dry and keep you safe longer). Material: 60% cotton, 40% Polyester