four Xsories 9,000mAh Sneaker Power Banks

What looks like the bottom of a shoe and charges your devices? This isn’t a riddle. It’s this thing.
Can provide 4 full charges for most smart devices when it itself is fully charged. But can it charge another XSories Sneaker Bank?!
You get 4 of them so you can find out!
Okay, so the sneaker casing does provide extra protection in case you drop it.
Model: SNKR5A601 (but if they were cool it would be $N34K3RZ)