When in the myAnswers dashboard area, click on the "Supplies" / shopping cart logo on the left navigation menu. The very first category is "Gear". There are small arrows to the right and the left of the first two items shown < >. Clicking on either arrow will navigate the menu and you will find the T-Shirts displayed there.
Thanks Joel! Your instructions are correct.
I'd also like to add that we are working on a fix that will allow us to show the t-shirts in the first set of products, so they will shore more prominently.
Customer support service by UserEcho