The Re:Define Laptop Backpack (18" x 13" x 7") is perfect for commuters and travelers. The exterior heathered grey material is made out of Recycled PET bottles, providing a sustainable choice to carry your belongings. You can easily wipe down the surface with a damp cloth to clean. This backpack is feature rich with a checkpoint friendly design, allowing you to pass through airport security with ease. Recharge your phone or other electronics with the external USB port. It even comes with a headphone port so you can feed your wires through the backpack for a hands free experience. Tired of carrying your backpack? The external back strap slides over most luggage handles so you can travel with ease. This bag comes with a 5 year warranty.