This is their 2016 Metal Cares shirt. I had to have one.
Here is a cut/paste from their web site about the charities supported:
Metal Cares is a non profit brand formed by Night Demon in 2013. As guys who travel the world doing what we love just for survival, we know its rough out there for a lot of people. Most of them a lot worse off than us. Lately Night Demon's efforts have been focused on scholarships for the underpriviledged in our community, working with the YMCA and Merch Relief, aiding victims of natural disasters. We have a lot of new ideas on the horizon, and will to continue to grow this program for the benefit of our fellow man. Gotta give back!
At least once a year we do a month long campaign for the Night Demon Metal Cares shirt. Every year has a new design, and have usually ended up being some of the best merch we've done. Sign up for the mailing list on the home page to receive all metal cares updates.