This backpack does it all. It's water-repellent for the rain, tough as nails, comfortable as anything, and has all the pockets you need to hold all your stuff. Water-resistant UA Storm technology keeps your stuff dry. Soft-to-the-touch top coat on material for added durability. Secondary compartment can be dual-purposed as a shoe/laundry pocket. Secure zip front pocket for essential item storage & side water bottle pocket that fits 32oz bottle. Soft-lined laptop sleeveholds up to 16" MacBook Pro or similarly sized laptop. Molle webbing for additional attachment points. Top grab handle. . . . 100% Polyester.