The double lined Curana Health OGIO Fugitive PackTravel Backpack is constructed of 900D poly/600D poly to withstand the rigors of everyday use. First rate features like an interior padded laptop sleeve, fleece-lined top drop-in digital media/audio pocket with headphone exit port, side mesh beverage pockets and dual-sided compression staps with adjustable sternum strap will make this backpack an everyday favorite.