MATMO Multifunction Waterproof Hiking Shoulder Rescue Backpack with Reflective Stripe High quality environmental waterproof Oxford cloth as material, very durable and wear-resistance Structure: 1*main zipper pocket with laptop layer, 2*pen pockets, 2*open layer pockets, 1*top zipper pocket, 2*front zipper pocket, 2*side mesh pockets and 2*chest pockets Dimension: 13.0"(L)*20.1"(H)*7.9"(W), (33cm*51cm*20cm) Shoulder straps can be adjusted according to your height and comfort requirements Awesome backpack for travelling, hiking, camping, etc