Olympus M.Zuiko Digital 12-40mm f2.8 PRO brand_Calumet Interior dimensions when expanded are

Interior dimensions when expanded are approximately 35x45x15cm

German language copy

and it's in very good condition: there is minor cosmetic surface wear from careful use and handling

Windscreen

Olympus M.Zuiko Digital 12-40mm f2.8 PRO brand_Calumet Interior dimensions when expanded areThe Olympus M. Zuiko Digital 12 40mm f2. 8 PRO is a compact professional zoom lens for Micro Four Thirds cameras. Quick focusing, excellent image quality, and a fast f2. 8 maximum aperture throughout the range a nice package. In excellent condition, with only very minor cosmetic wear, mostly at the hood mounting bayonet. Includes original hood and box.