It does what it's meant to do. For transporting and protecting the power bank, charger and cable.
The case is a good fit for the Storm 2 but is not without issues.
It is a hard case but is on the softer end of hard cases. I'm satisfied the powerbank will not get scratched or scuffed while in the case, but would not trust it falling off a table and would expect some damage then.
The elastic strap used to keep the powerbank secured in the case is a little flimsy and I would expect the elasticity to wear out quickly and become baggy and useless.
Finally, the images on the website clearly show the powerbank, cable and 100W Pro GaN charger in the case together. I have tried this myself and it doesn't really work. It is possible to zip up the case with the charger inside but it is a struggle and the charger rests firmly against the powerbank which may cause scratches to the powerbank case, or even worse hit it directly during impact or a drop and crack the powerbank casing.