slim wall plug

I bought this after a short trip to virginia had an unexpectedly long layover, I had only brought a usb cable since I knew I would be able to plug it in at my parents house, but the airport I was at did not have usb plugs (plus I don�t love plugging into a random USB port, heard too many things about issues with that). I keep this in my person item just in case, it doesnt take up much room and gives me peice of mind should I be unexpectedly stuck somehwere