NIUEIME-8501 Canvas Causal Backpack Vintage Rucksack Crossbody Messenger Daypack for Men Travel Climbing Camping Hiking Machine-wash, 16oz garment washed canvas canvas, cotton inside Multi-purpose uses: This bag can used as duffle/handbag/suitcase/brief case when travelling. A detachable shoulder strap can easily turn the backpack into a messenger bag/crossbody bag/mail bag/shoulder bag. One bag offers two different ways of carrying Large Size:14.56 inch, 11.4 inch long and 3.15 inch wide, Big enough, space saving, easy to carry your necessary(1.83lb shipping weight) Economize your carrying effort: Thickened & widened breathable, adjustable, help reduce the load.Useful and Spacious with many pockets: Besides main pocket, back zippered pocket, there are secret protective compartment, phone pocket, and pen pocket inside the bag