Oakley SI Messenger Bag. First generation.  As seen in Dexter. This thing is a beast!

All zippers and hardware in perfect condition. Has a few spots of spray paint from being owned by graffiti artist. (shown in photos)

From Oakley:

Durability of nylon construction

Protection of padding in laptop pocket

Comfort of adjustable shoulder strap with padding

Versatility of Oakley Adaptable Payload (AP) system that lets you reconfigure for light or bulky cargo: this bag is engineered with removable pouches that can be attached to the Oakley AP Vest or other bags that use the AP system (all sold separately)

Adaptability of removable laptop sleeve with carrying handle

Convenience of multiple storage pockets, removable pouch pockets, storage pocket with zips for attachment of roller (not included), piggyback transport via pass-through sleeve for handle of AP Rolling Bag (sold separately), custom D-rings for external attachments, adjustable side compression straps, and daisy chain webbing

Recommended for a 17” screen laptop or less.