Recently, Green Day teamed up with the "City of Hope" charity to design a shirt to sell with 50% the profits of the shirt going towards the innovative research for the cure for cancer, diabetes, and HIV / AIDS.

The design of the shirt features Green Day's "Kerplunk Flower" on the front and the "City Of Hope" logo on the upper back. You can be viewed to the right.

You can purchase the shirt on CityOfHope.com for $21.95 by clicking here. The shirts will begin shipping on August 8th.