
the battery is very useful in all seasons
Last year I purchased the coat for my Son in law and he loved it so much this year I purchased the vest for my daughter. So one of the best parts is the battery. When I asked my son in law if he was wearing the coat now that winter is coming he said no not quite cold enough but I never leave home without the battery for my phone. I said what? He said yeah during the summer when I didna??t need the coat I am still able to use the battery and I just love it. So now they each have one. Women need to layer so I chose the vest for my daughter and she is quite pleased as you can see in the photo.