For the traveler like me there is no worst fear then to have a phone or tablet that is running low on battery. One day I received a text that would change that fear. An infomercial had come on and they instantly sent a text to me that said you have to have this product, followed by the link.
I did some research to find the cheapest price which at the time was amazon.com, but had a concern about one of the specs on the website www.mypowerbag.com. It said that the backpack weighted in empty at a whopping 3 lbs. I needed to find a place that cared them in the store, with a little more research I found that BestBuy carried them in the store. Went to BestBuy and picked up the bag. I have no idea where they got the 3 lbs at because the bag only felt like a pound. Played with it and tried it on for size. Ended up purchasing the bag at BestBuy, having them price match amazon.com.
My powerbag has accompanied me on one trip so far. My only complaint is that I need a bigger battery so I can use it as the main power source when traveling. Other than that it made going though security a snap because of a dedicated laptop pocket. If you travel this is a must have as far a I'm concerned.