Celebrities are often known for their extravagant lifestyles but not Matt Damon.
This holiday season he is teaming up with Water.org, the charity he co-founded, to launching a water bottle campaign to help over 884 million people who lack access to clean, safe water.
The "We Bought A Zoo" star isn't out of touch, however. He knows how present-obsessed kids can be so he put on a Santa suit and set off to convince the children of America that water is the greatest gift of all.
Also, after his last brush with a youngster, it looks like the star is trying get his name out to a more youthful audience.
Check out the video above of the water-bottle peddling Damon.