A 2.5 "external hard drive fits into it, such as the My Passport or element series from Western Digital. Of course, plates with this form factor should fit from other manufacturers. It would also fit a slightly larger plate to each side is about 0.5 cm room. A flexible nylon tape holds the disc in place. On the other side is a mesh pocket, in which fits a short USB cable, or an SD memory card, a USB stick, or the like may also be a second hard drive, but the could lead to unwanted bumps.
The zipper makes a good impression, which can be gripped easily rather large rubber closure and does not interfere in the closed state. The metal eyelet at the bottom is a bit thin, I could imagine that the zipper breaks at this point one day.
The bag smells a little "new", but not really unpleasant. That will perhaps even vanish in a few days.
The delivery was like really very very fast always on Amazon. Packed she was in a simple cardboard box with a little cumbersome security seals (on "Frustration-Free Packaging"). A separate printed description etc. was not there (an imprint in the cover refers to the product number, which you can enter in the search).
Due to the low price of the bag, I would issue a total of strong buy recommendation, if necessary, I'll get me one more second.