Water repellent backpack great for daily commute, travel, and hiking; modular design with large main compartment, front zippered pocket, and moreCarries comfortably on your shoulders with yoke-style adjustable, padded straps and adjustable sternum slider; contoured foam back with multiple air channelsTactical features include MOLLE webbing for attaching a variety of optional accessories; tubing port for accessing hydration bladder pocket (reservoir sold separately)Hook-and-loop are on front of pack for attaching a flag patch; stretchy side pouch fits most water bottles