This is a Victorinox business bag. The external dimensions are approximately 42cm wide, 30cm high, and 12cm deep. When the zipper is opened, the depth expands to approximately 17cm. I purchased this bag over a decade ago, but it has been used infrequently and is in good condition. However, the handle of the zipper that expands the depth is missing (see image 6, the right zipper. The zipper can still be opened and closed). As shown in the product description photo (image 2), the bag has a pocket on the side that can hold a 500ml bottle. Opening the two zippers on the back allows you to pass the handle of a carry-on bag through.