This lightweight backpack folds flat to be completely packable. Keep it in its small zip pouch that can easily be stored inside larger bags for those moments when you need it "just in case." Exclusively available on TUMI.com, personalize your backpack with embroidery. Exterior Double-zip entry to main compartment Top handle Front zip pocket Adjustable backpack straps Add-a-Bag strap Zip pouch with snaps that attach to bag interior Interior Snaps to attach pouch Dimensions 15.5" X 12.3" X 4.5" Weight 0.6 LB Primary Material Nylon Style #1465881491 The very close up picture shows a small pen mark.