40L LARGE CAPACITY & LIGHT WEIGHT: Unfolded Size: 17.3x13.4x8.7 inch. Folded Size: 8.3x7.5x3.1 inch. WEIGHT: 0.85 LB MULTIPLE STORAGE COMPARTMENTS: Main compartment x1, Zipped front pocket x1, laptop pocket x1, Inner zipped pocket x1, Side Pocket x2 DURABLE DESIGN: The water resistant backpack is made from high strength ripstop nylon with double stitched tear points, a reinforced back and bottom and abrasion resistant zippers for extra durability HUMANIZATION DESIGN: Reflective stripe makes you visible to vehicles in the dark. The adjustable chest strap make it sturdy when you are walking. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress off your shoulders. GO ANYWHERE: This multi-use traveling backpack for men and women is a great hiking daypack, camping backpack, or portable day bag you can use for school, work, sports, the beach, air travel and more.