Here's a question for you: What do you call a smartphone or tablet without any battery power?
Fortunately, your On-the-Go Dad will never have to know the answer to that question wen you get him the Powerbag Messenger Bag. You see, the bag has a built-in 3000 mA/h battery that charges a smartphone, tablet, or pretty much any USB device you connect it to. It's practical, it's useful, it is definitely something Dad would love for Father's Dad; and it's available in black or gray.
