The Under Armour UNDENIABLE 5.0 DUFFLE LG features UA Storm technology, which has a highly water-repellent finish that withstands the elements. It has a solid, foam-coated bottom and TPU side panels for added durability. It features a large inner ventilated pocket for clothes or shoes and other multiple pockets for better organisation. The removable, padded HeatGear shoulder strap stows easily in the side pocket.