The 26 liter? Under Armour Hustle Backpack 4.0 provides plenty of storage space to carry all the gear you need. It is made of polyester fabric with a water-resistant finish to protect your gear from the elements and offers multiple pockets to hold your essentials, including two water-repellent front pockets, a dedicated laptop sleeve, a large? front laundry/shoe pocket, and two side water bottle pockets to keep you hydrated. 100% Polyester. UA Storm technology delivers an element-battling, highly water-resistant finish. Adjustable HeatGear shoulder straps for extra comfort. Soft-lined laptop sleeve holds up to 15" MacBook Pro? or similarly sized laptop. Two water-repellent front valuables pockets to keep your stuff safe. Large, gusseted front laundry/shoe pocket placed at bottom of bag. D-Ring on front panel for additional attachment point. Two side water bottle pockets. Tough, abrasion-resistant bottom panel. Top grab handle. Volume: 26 L (1,586.7 cu. in.). Dimensions:? ? 5.9"W x 13"H x 19.3"L. Weight: 1 lb.. Spot clean. Imported.