This portable hiking backpack is made of durable, tear-resistant and waterproof imported nylon fabric with double metal zippers, reinforced stitching at key stress points and a double-layered bottom for long-lasting everyday use. It offers generous storage space with a multi-compartment design: one main zipper compartment, two front zipper pockets, two side pockets, a waterproof wet pocket. Interior pen pockets and slip pockets help you neatly organize all your items for your outing. Weighing just one pound, this lightweight trekking backpack folds easily into its own built-in pocket for compact storage and unfolds quickly when needed. Breathable mesh shoulder straps with plush foam padding relieve strain on your shoulders, while the chest strap includes a built-in whistle for quick emergency access, it evenly distributes the pack s weight to keep it stable and centered on your back.