I tackled 100 days shirt is a simple and stylish way to show your commitment to the cause. These shirts are made to last and will get you as many cheers as you do. Introducing the game changing Tackled 100 Days shirt. For almost a century, people have changed the world by challenging themselves to go 100 days without giving up. This Tackled 100 Days shirt is made of premium fabric and is reflective of a classic, comfortable t-shirt with new, unique styling.