Review (3/5): Good for the price
For the price point, this is a great case for your powerbank. It is sturdy, decent quality and keeps your battery nice and snug. There are quite a few things to consider before buying though. For one, the case is way too big. I think you could fit two batteries in it, which I guess if you owned two, that would be great! But, for extra cords, etc. you definitely do not need a huge amount of space. With it being big, it is awkward to put into bags, etc. Another minor annoyance is the loop strap. It may be a personal preference but it is in an awkward location and almost gets in the way when zipping up your case. I wish it was removable.
So, if you're looking to more protection for your battery for cheap, look no further. This case will definitely protect your battery; just consider the above things before buying.