Cool Walker Vintage Canvas Laptop Daypack Messenger Bag Business Briefcase School Bag Imported Material outside:Import quality high density washed Canvas; Lining material: Polyester Size: 15.8(L) *5.1(W)*13.8(H) inch /40 x13x35cm, please allow 1-2cm differs; Perfect extrinsic, practical intrinsic: A main bag, a concealed pocket, a computer interlayer;Two big side pockets design, allowing you to put the kettle and other small items; Quality smooth zipper;Metal buckle strap can adjust the length for your convenience;