A star I have to deduct because of the outrageous price. At 30 I would have said anything, but 50? That's 25% of the cost of my Moto G! But I have found no competitive product and I'm also really happy with the KlickFix Phonebag. However, I am of the opinion that such a price should not be accepted without opposition, at least.
In addition to a Moto G also fit another 10,000 mAh battery of EasyAcc with pure. But is quite narrow. A flat 5000 mAh battery should but easily fit inside.
Addendum:
As expected, the phone fits together with a flat 5,000 mAh battery well in the Phonebag. I use the EasyAcc iChoc. Advantage of this power bank is the integrated charging cable.