I bought this bag as a medium-sized carrier for use on holiday. I wanted something to put a camera in (that was not obviously a camera bag), a bottle of water and sometimes my Sony Tablet. The satchel type bags were too big, and most of the man-bags on offer appeared too small.
Size wise, this is just right. As the trader says, it will fit up to a 12" laptop/ tablet device, although I would not want to put anything too heavy inside it for long periods. The canvas is nicely styled, although quite thin and only single stitched. Inside, the water-proof lining, and zipped compartments appear rather flimsy, and I would not be at all surprised if this tears after comparatively short use. Oh, and there is no extra padding, so if you do put delicate equipment inside this bag, make sure you treat it gently.
So, for the price, this is a good, stylish bag, with zipper and Velcro fastenings, and it should be fine over the short term for most practical use. Longer term, not so sure it has durability.