The designs on the front and back of the shirt are shown below. The shirt will be light grey, instead of the white shown in the graphics and is 100% cotton. If you would like to order a shirt, send email to me (tjochem@ri.cmu.edu) with the quantity and size (S/M/L/XL/XXL). Cost is $10.00 if you are at CMU, $14.00 if you are in the continental US, and $18.00 elsewhere. Prices include shipping. I'll get back with those of you outside of CMU regarding method of payment.