Run to Honor is a great organization. They just started a fan page on Facebook. Like them to show your support and to keep updated on their upcoming events if you are in the DC area. You can order a shirt for yourself here, but only until February 14th so hurry!
Note on Sizing: In case you need a size chart, I found the men's here and the women's here. Just click on the "Sizing" located near the sizes on the page.