Pacsafe Ultimatesafe Z15 Anti-Theft Backpack, Charcoal Rugged backpack made with sturdy canvas fabric and built-in anti-theft technology; ideal for mobile urbanite or traveler Stainless steel 360-degree exomesh locking system helps secure the main compartment and those can't-live-without valuables Patented stainless steel exomesh weave imprint visible on main compartment; separate top compartment with smart zipper security Comes with a removable 15-inch laptop sleeve; tsa-approved padlock to lock bag to a secure fixture 3.5"x13.5"x18"