Berghaus Optimus 40 liter capacity wheeled travel case roller bag convertible to rucksack with lots of great features. Very little use, almost no wear except light scuffs near wheels. Internal compression straps and full size mesh pocket, and pull out compartment divider. Zipped exterior front compartment, fits a laptop. Strong zips with pulls and locking loop.
Adaptable carrying system to carry as a backpack by pulling out straps tucked in the back. Strong carry handle, very nice, smooth-running metal telescopic handle for pulling on 2 sturdy wheels. Black with slate gray front and accents.
Great quality construction, got compliments on it at the airport each time I used it! Max height 24 inches, max width 15 inches, max depth 8 inches. I always took it as a carry on with no problems, although obviously check your airline requirements. This wheeled bag is a very nice design, it has a great quality feel and lots of great little add-on compartments, including an easy access passport pocket on back.