Under Armour Essential Backpack 54. Water-resistant UA Storm technology keeps your essentials dry. Soft-lined laptop sleeve holds up to 15" MacBook Pro® or similarly sized laptop. Features a zip-shut main compartment and a large, zippered valuables pocket at the front. Includes a center front drop-in water bottle pocket. Jacquard wordmark webbing across the top. Top grab handle. Style #: 1378415. Dimensions When Full: 11.8"W x 17.7"H x 5.1"L. Volume: 25 L. 100% Polyester. Imported.